What is the approximate percent by mass of oxygen in SO3? 1). 2). 3). 4).

Answers

Answer 1

The approximate percent by mass of oxygen in SO3 is 19.98 % which is calculated by using the percent composition formula.

The sulfur trioxide is defined as the chemical compound with molecular formula or chemical formula SO3. In every sample of substance there will be the same number of sulfur atoms and oxygen atoms present in the substance.

The percent composition can be calculated by dividing the mass of the atom by the total mass of the compound or the molecular weight multiplied by 100.

It can be calculated as, C% =MA / MT×100

We know that the atomic weight of Sulphur is 32.059 g/mole and the atomic weight of oxygen is 16.0.

The total mass becomes,  32.059 + 3×16=80.059

.C% = 16.00 / 80.059 ×100

⇒C% =19.98 %

To learn more about percent composition

https://brainly.com/question/28357357

#SPJ4

The correct question is,

What is the approximate percent by mass of oxygen in SO3?


Related Questions

Multiple choice: A solution is prepared by dissolving 1.0 g of NaOH in a total volume of 250 mL solution. Then 10.0 mL of this solution is withdrawn and added to 90.0 mL of water. What is the pH of the final solution?a. 11.50b. 12.00c. 12.50d. 11.00e. 13.50

Answers

A solution is prepared by dissolving 1.0 g of NaOH in a total of 250 mL of solution. Then 10.0 mL of this solution is withdrawn and added to 90.0 mL of water. The pH of the final solution is 11. Here option D is the correct answer.

To determine the pH of the final solution, we need to calculate the concentration of hydroxide ions (OH-) first.

1.0 g of NaOH is dissolved in a total volume of 250 mL of solution, which is equivalent to 0.004 moles of NaOH (since the molar mass of NaOH is 40.0 g/mol). Therefore, the concentration of NaOH in the original solution is:

c(NaOH) = 0.004 moles / 0.250 L

= 0.016 M

When 10.0 mL of this solution is added to 90.0 mL of water, the resulting concentration of NaOH is diluted by a factor of 10. Therefore, the concentration of NaOH in the final solution is:

c(NaOH) = 0.016 M / 10

= 0.0016 M

Since NaOH is a strong base, it completely dissociates in water to form one mole of hydroxide ions (OH-) for every mole of NaOH. Therefore, the concentration of hydroxide ions in the final solution is also 0.0016 M.

To calculate the pH of the solution, we use the following equation:

pH = 14 - pOH

Since the concentration of hydroxide ions is 0.0016 M, the pOH is:

pOH = -log[OH-]

= -log(0.0016)

= 2.80

Therefore, the pH of the solution is:

pH = 14 - pOH

= 14 - 2.80

= 11.20

To learn more about NaOH

https://brainly.com/question/29010104

#SPJ4

how many chirality centers are there in an aldohexose?a. 3b. 4c. 5d. 6

Answers

There are 4 chirality centers in an aldohexose. The correct answer is option b.

Aldohexoses are six-carbon monosaccharides with a carbonyl functional group (aldehyde group) and five other carbon atoms, each of which is associated with an alcohol functional group in their straight-chain form. The carbonyl carbon, which is referred to as the anomeric carbon, determines the stereochemistry and the cyclic form of aldohexoses.

Chirality centers are carbon atoms that have four distinct substituents bonded to them, resulting in the ability to exist as stereoisomers. These stereoisomers are mirror images of each other and cannot be superimposed upon each other.Therefore, it is important to count the number of chirality centers present in the aldohexose structure.

There are four chirality centers in aldohexose, which are present at carbon atoms 2, 3, 4, and 5.

For more such questions on chirality centers, click on:

https://brainly.com/question/9522537

#SPJ11

Which of the following complexes will absorb a photon with the lowest energy?
Group of answer choices
A. [Co(OH)6]3-
B. [Co(SCN)6]3-
C. [Co(NO2)6]3-

Answers

The complex that will absorb a photon with the lowest energy is [Co(OH)6]3-. The correct answer is option A

Co(OH)6]3- is the complex that absorbs a photon with the lowest energy. It is because of the crystal field effect. The complex [Co(OH)6]3- has the lowest energy for the d-electrons of the cobalt ion. A photon is an elementary particle that forms a light beam. It has a small mass and no charge. A photon has wave-particle duality, which means it exhibits properties of both a wave and a particle. Photons are electromagnetic radiation particles, which means they have both electric and magnetic components.

The lowest energy is defined as the minimum energy that a system can have. It is the energy state that is energetically stable. Photons have energy, and the energy of the photon is directly proportional to its frequency. The energy of a photon can be used to determine the energy of the electron that absorbs it.

A weak field ligand environment means that there is a small energy gap between the t2g and eg orbitals. As a result, it absorbs photons with the lowest energy, according to the spectrochemical series. In comparison to the other complexes, [Co(OH)6]3- has a low-energy gap, which makes it the most stable.

Know more about electromagnetic radiation here:

https://brainly.com/question/10759891

#SPJ11

How do I calculate the moles of calcium chloride with a mass of 1. 11 g

Answers

You need to know the molar mass of calcium chloride in order to calculate the moles of calcium chloride with a mass of 1.11 g. The total atomic masses of all the atoms in a single compound molecule make up the molar mass.

According to its chemical formula, calcium chloride is composed of two chlorine atoms (atomic mass = 35.45 g/mol) and one calcium atom (atomic mass = 40.08 g/mol). As a result, calcium chloride has the following molar mass:

CaCl2 has a molar mass of 110.98 g/mol (40.08 g/mol + 2 x 35.45 g/mol).

The number of moles of calcium chloride having a mass of 1.11 g may be determined using the molar mass of calcium chloride, which we already know. The following is the formula to get the number of moles:

Molar mass divided by mass equals a mole.Substituting the values we know, we get:

moles of CaCl2 = 1.11 g / 110.98 g/mol = 0.01 mol

learn more about moles of calcium chloride here:

https://brainly.com/question/12641371

#SPJ4

When it fails to occur, is the chemical basis for a metabolic syndrome in which the body fails to breakdown fatty acids?

Answers

Yes, the chemical basis for a metabolic syndrome is the failure of the body to breakdown fatty acids.

What is Metabolic syndrome?

Metabolic syndrome is used to describe a collection of health problems that increase the risk of developing other diseases such as diabetes, heart disease, and stroke. The primary cause of metabolic syndrome is obesity, which is why it is frequently referred to as "obesity syndrome."

The syndrome is also linked to other genetic and environmental factors that contribute to insulin resistance, inflammation, and high blood pressure, as well as a failure to break down fatty acids properly in the body. Thus, the chemical basis for metabolic syndrome is the failure to break down the fatty acids in body. This chemical problem can contribute to the development of other fatal diseases and health problems.

Learn more about Metabolic syndrome here:

https://brainly.com/question/31106238

#SPJ11

which type of radioactive emission is considered the most dangerous?

Answers

Gamma radiation are the most dangerous type of radioactive emission as they are the most energetic and can penetrate the human body and damage cells. Alpha particles can cause both short-term and long-term health effects, such as cancer.

Out of alpha, beta and gamma radiation, the most dangerous type of radioactive emission is gamma radiation. This is because gamma rays are penetrating, high-energy rays that can easily penetrate the human body and cause damage to cells and DNA. Gamma radiation, unlike alpha and beta radiation, can penetrate the body's skin and tissue, exposing internal organs to radiation. When gamma rays are absorbed by living cells, they can ionize atoms and molecules, causing damage to DNA and other genetic material in the cell. High doses of gamma radiation can cause immediate symptoms such as radiation sickness and even death. Gamma radiation is frequently emitted by unstable radioactive atoms like uranium and plutonium, which are used in nuclear power plants and nuclear weapons. Workers in these industries and anyone exposed to a nuclear accident or bomb are at a higher risk of exposure to gamma radiation. Alpha radiation is a type of ionizing radiation that is emitted by certain types of unstable atoms. Alpha particles are relatively large and have a short range, so they can be stopped by a sheet of paper or the outer layer of human skin. Beta radiation is a type of ionizing radiation that is emitted by certain types of unstable atoms. Beta particles are much smaller than alpha particles, and they can travel through the human body farther than alpha particles. Gamma radiation is a type of electromagnetic radiation, similar to X-rays, but with higher energy and frequency. Gamma rays are produced by the decay of unstable atomic nuclei and are highly penetrating, meaning they can easily pass through solid objects.

For more such questions on Gamma radiation , Visit:

https://brainly.com/question/4422250

#SPJ11

The epithelial cells of the proximal convoluted tubule are adapted for reabsorption by: a. having thin walls. b. having rugae folds that increase surface area. c. secreting enzymes that activate absorption of substances. d. having microscopic projections called microvilli.

Answers

Answer: d. possessing tiny protrusions known as microvilli. The proximal convoluted tubule's epithelial cells have microvilli on their surface, which increases their surface area and improves.

the efficiency of reabsorption of chemicals from the filtrate back into the circulation. The cells do not release enzymes to promote absorption, and the rugae folds and thin walls are not adaptations for reabsorption. The proximal convoluted tubule's epithelial cells are in charge of reabsorbing vital components from the glomerular filtrate, including glucose, amino acids, and electrolytes. Many microvilli, which are tiny finger-like projections on the surface of the cell that enhance the surface area accessible for reabsorption, are present in the cells, which enable them to perform this role. This modification makes it possible for chemicals to be reabsorbted more effectively as they move through the tubule. The rugae folds and thin walls, on the other hand, have little impact on reabsorption in the proximal convoluted tubule. In this region of the nephron, reabsorption likewise does not include enzyme secretion.

learn more about microvilli here:

https://brainly.com/question/30871186

#SPJ4

which scientist conducted the gold foil experiment and discovered that the atom has a positively charged nucleus in the center, and that most of that atom is empty space?rutherfordgoldsteinalessandro volta

Answers

Ernest Rutherford is the physicist who carried out the gold foil experiment and found that the atom has a positively charged nucleus in the centre and that the majority of that atom is empty space.

The gold foil experiment was carried out in 1911 by Ernest Rutherford, who attacked a thin sheet of gold foil with alpha particles and tracked their scattering patterns.

Based on his discoveries, he put forth the nuclear model of the atom, which argues that the majority of the atom is made up of empty space and contains a positively charged nucleus at its core. The advancement of the contemporary atomic theory was greatly aided by this experiment.

learn more about positively charged nucleus here:

https://brainly.com/question/1549147

#SPJ4

(a) What would you expect the pH of pure water to be?(b) What colour would the universal indicator show in an aqueous solution of sugar? Why?(c) A sample of rain water turned universal indicator paper yellow. What would you expect its pH to be? Is it a strong or a weak acid?

Answers

(a) The pH of pure water is 7, which is neutral. (b) The universal indicator would show a yellow color in an aqueous solution of sugar, because sugar is a neutral compound with a pH of 7.(c) The pH of the rain water is likely around 5 or 6, which indicates a weak acid.

pH is less than 7 since yellow color indicates acidic rainwater. Rainwater has an acidic pH because it dissolves atmospheric carbon dioxide (CO2), sulfur dioxide (SO2), and nitrogen oxides (NOx), forming weak carbonic, sulfuric, and nitric acids.

Rainwater that has a pH below 5.6 is considered to be acid rain. Therefore, the acid present in rainwater is a weak acid because the pH of the rainwater is above 1.

Learn more about pH here:

brainly.com/question/15289741

#SMJ11

A triglyceride that loses a fatty acid is called a ____.

Answers

A triglyceride that loses a fatty acid is called a diglyceride or diacylglycerol. This occurs when the triglyceride molecule undergoes a process called hydrolysis.

Hydrolysis breaks the ester bond between one of the fatty acids and the glycerol backbone, releasing a free fatty acid and forming a diglyceride.

This process is essential in the metabolism and digestion of fats in our bodies, as it allows the body to break down complex fat molecules into simpler components that can be absorbed and utilized for energy or other biological functions.

In addition, diglycerides play important roles in cell signaling and membrane structure, serving as essential building blocks for various cellular components.

Learn more about hydrolisis here:

https://brainly.com/question/29439050

#SPJ11

What volume of air is present in human lungs if 0.19 mol are present at 312K and 1.3 atm?
A. 0.066
B. 2.9L
C. 5.5L
D.3.7L

Answers

Answer:

The answer is D - 3.7 L.

Why were dirigibles considered to be the wave of the future in travel?

Answers

Answer:

jkhihjijhbjbjk

In the early 20th century, dirigibles were considered to be the wave of the future in travel because they were capable of traveling long distances at high altitudes, which made them suitable for long-distance travel and exploration. They were also seen as a safer and more comfortable alternative to airplanes, which were still in their early stages of development. Additionally, dirigibles were capable of carrying large amounts of cargo and passengers, which made them attractive for commercial purposes. However, the development of airplanes and the Hindenburg disaster in 1937 led to a decline in the use of dirigibles for travel.

what is oxygen friend and why would they be friend with oxygen

Answers

Answer:

oxygen friend

Explanation:

It is generally believed that the Earth's atmosphere did not contain oxygen until around 2500 million years ago (Mya) when oxygen-evolving photosynthetic bacteria arose. At around 800–500 Mya, the oxygen concentration increased sharply to reach the 21% we have today. So, it seems highly likely that life arose as anaerobic organisms, which then evolved to tolerate oxygen and finally, to use it as a terminal acceptor for the energy-producing oxidative processes in the respiration of aerobic bacteria and mitochondria in eukaryotic cells. The respiratory processes employed by typical aerobic organisms today have a wide range of mechanisms to deal with the troublesome side effects of living with a high oxygen concentration.

If a second order reaction has an initial concentration of 2.91 M and a concentration of 1.38 M after 189 seconds, what is the rate constant k for the reaction? Your answer should have three significant figures (use scientific notation).

Answers

The rate constant k for the reaction is 3.84 x 10⁻³ s⁻¹.

What is the rate constant of the reaction?

The second-order rate law is expressed as:

rate = k [A]²

where;

k is the rate constant and [A] is the concentration of the reactant.

The integrated rate law for a second-order reaction is:

1/[A]t - 1/[A]0 = kt

where;

[A]t is the concentration of the reactant at time t, [A]0 is the initial concentration of the reactant, andk is the rate constant.

Substituting the given values into the equation, we get:

1/1.38 - 1/2.91 = k(189)

0.7246 = k(189)

k = 0.7246/189

k = 3.84 x 10⁻³ s⁻¹ (to three significant figures in scientific notation)

Learn more about rate constant here: https://brainly.com/question/24749252

#SPJ1

Complete the following radioactive decay problem.

234 U → 4^He +
92. 2

Answers

The complete radioactive decay equation is as follows:

234/92 → 4/2He + 230/90 Th

What is a radioactive decay?

Radioactive decay is a several processes by which unstable nuclei emit subatomic particles and/or ionizing radiation and disintegrate into one or more smaller nuclei.

According to this question, uranium with the mass number 234 and atomic number 92 undergoes a radioactive decay as follows:

234/92 U → 4/2 He + 230/90 Th

Uranium-234 nuclei decay by alpha emission to thorium-230, except for the tiny fraction (parts per billion) of nuclei that undergo spontaneous fission.

Learn more about radioactive decay at: https://brainly.com/question/1770619

#SPJ1

Look at the transition you drew for Element Y on the earlier slide. On a piece of paper, write out your calculation to find the energy of the photon emitted. Calculate the wavelength (in nm) of the photon emitted for Element Y. Calculate the frequency of the photon emitted for Element Y.

Answers

To calculate the energy of the photon emitted for Element Y, you can use the following equation:
E = hc/λ
where h is Planck's constant (6.626 x 10-34 Js), c is the speed of light (3 x 108 m/s), and λ is the wavelength of the photon (in meters).

To calculate the wavelength of the photon emitted for Element Y, you can use the following equation:
λ = hc/E
where h is Planck's constant (6.626 x 10-34 Js), c is the speed of light (3 x 108 m/s), and E is the energy of the photon (in Joules)

To calculate the frequency of the photon emitted for Element Y, you can use the following equation:
f = c/λ
where c is the speed of light (3 x 108 m/s), and λ is the wavelength of the photon (in meters).

Read more about the topic of photons:

https://brainly.com/question/30858842

#SPJ11

determine the limiting reactant, amounts of each product formed, and the amount by which the excess reactant is for a reaction between 12.0 grams of nh3 and 15.0 grams of o2.

Answers

To determine the limiting reactant, amounts of each product formed, and the amount by which the excess reactant is for a reaction between 12.0 grams of NH₃ and 15.0 grams of O₂, the balanced chemical equation and stoichiometry must be used.

The balanced chemical equation for the reaction between NH₃ and O₂ is:

4NH₃ + 5O₂ → 4NO + 6H₂O

To determine the limiting reactant, the amounts of reactants must be converted to moles. The molar mass of NH3 is 17.03 g/mol and the molar mass of O₂ is 32.00 g/mol.

12.0 g NH₃ × (1 mol NH3/17.03 g NH₃) = 0.705 mol NH

315.0 g O₂ × (1 mol O2/32.00 g O₂) = 0.469 mol O₂

The stoichiometry of the balanced chemical equation indicates that 4 moles of NH₃ reacts with 5 moles of O₂. The mole ratio of NH₃ to O₂ is 4/5 or 0.8. Since the mole ratio of NH₃ to O₂ is greater than the actual mole ratio of 0.705/0.469 or 1.50, NH₃ is the excess reactant and O₂ is the limiting reactant.

To determine the amount of each product formed, the mole ratio of products to limiting reactant must be used. The mole ratio of NO to O₂ is 4/5 or 0.8, and the mole ratio of H₂O to O₂ is 6/5 or 1.2. Since O₂ is the limiting reactant, the amount of NO and H₂O that can be produced is based on the mole ratio to O₂.

0.469 mol O₂ × (4 mol NO/5 mol O₂) × (30.01 g NO/1 mol NO) = 0.601 g NO

0.469 mol O₂ × (6 mol H₂O/5 mol O₂) × (18.02 g H₂O/1 mol H₂O) = 0.674 g H₂O

The amount of excess NH₃ is determined by subtracting the moles of NH₃ used from the moles of NH₃ added.

0.705 mol NH₃ − (0.469 mol O₂ × 4 mol NH₃ / 5 mol O₂) = 0.408 mol NH₃

Thus, the limiting reactant is O₂, 0.601 g NO and 0.674 g H₂O are produced, and there is 0.408 mol of excess NH₃.

Learn more about limiting reactant: https://brainly.com/question/12741756

#SPJ11

A sample of iron wire reacts with oxygen to form iron(III) oxide. If 3.58g of the wire yields 5.00g of the iron(III) oxide, calculate the percentage purity of the iron.

How do I do this question? Thanks!

Answers

Answer:

We can start by finding the amount of iron used in the reaction:

Iron (Fe) is the limiting reagent since it is completely used up in the reaction.

Molar mass of Fe = 55.845 g/mol

Moles of Fe = mass / molar mass = 3.58 g / 55.845 g/mol = 0.064 moles

The balanced chemical equation for the reaction is:

4Fe + 3O2 → 2Fe2O3

From the equation, we can see that 4 moles of Fe react with 3 moles of O2 to produce 2 moles of Fe2O3.

Moles of Fe2O3 produced = mass / molar mass = 5.00 g / (2 x 159.69 g/mol) = 0.01567 moles

Since 4 moles of Fe reacts with 2 moles of Fe2O3, the theoretical yield of Fe2O3 from 0.064 moles of Fe is:

Theoretical yield of Fe2O3 = (0.064 mol Fe) x (2 mol Fe2O3 / 4 mol Fe) x (2 x 159.69 g/mol Fe2O3) = 12.746 g

The percentage purity of iron is:

Percentage purity = (actual yield / theoretical yield) x 100%

Percentage purity = (5.00 g / 12.746 g) x 100% = 39.26% (rounded to two decimal places)

Therefore, the iron wire is 39.26% pure.

a sample of helium gas has a volume of 620. ml at a temperature of 500. k. if we decrease the temperature to 100. k while keeping the pressure constant, what will the new volume be?

Answers

The new volume of the helium gas sample will be  124 ml. This is due to the fact that when the temperature decreases while the pressure remains constant, the volume of a gas will increase.


According to Charles’s law, the volume of a given gas at a constant pressure is directly proportional to its absolute temperature. Therefore, a decrease in temperature, while holding constant the pressure of the helium gas, would result in a decrease in volume.

A constant pressure is the one under which the pressure of a substance remains unchanged as the temperature and/or volume of the substance change. Charles's law may be used to explain the properties of gases, particularly with constant pressure since it states that the volume of a given mass of a gas is directly proportional to its absolute temperature, provided that its pressure remains constant. It's written as:V1/T1 = V2/T2; whereV1 = 620 ml; T1 = 500K; T2 = 100KLet's put the values in the formula given above. The [tex][tex]620/T1 = V2/100V2 = 62,000/500V2 = 124 ml[/tex].[/tex]Therefore, the new volume of helium gas at a temperature of 100K would be 124 ml.

Read more about the volume :

https://brainly.com/question/463363

#SPJ11

Determine the overall reaction and its standard cell potential at 25 �C for the reaction involving the galvanic cell made from a half-cell consisting of a silver electrode in 1 M silver nitrate solution and a half-cell consisting of a zinc electrode in 1 M zinc nitrate. Is the reaction spontaneous at standard conditions?

Answers

The reaction involved in the galvanic cell made from a half-cell consisting of a silver electrode in 1 M silver nitrate solution and a half-cell consisting of a zinc electrode in 1 M zinc nitrate is given as follows:2 Ag(s) + Zn2+ (aq) → Zn(s) + 2 Ag+ (aq)The standard cell potential at 25 °C for the given reaction can be determined using the following formula: E°cell

= E°cathode - E°anodeHere, the E°cathode and E°anode represent the standard reduction potentials of cathode and anode respectively. The values of these standard reduction potentials can be obtained from the standard reduction

potentials table.Using the values of standard reduction potentials from the table, we have:E°cell = E°Ag+ / Ag - E°Zn2+ / Zn= +0.80 V - (-0.76 V)= +1.56 VThe reaction is spontaneous at standard conditions because the calculated standard

cell potential is positive (+1.56 V). Therefore, the reaction will proceed spontaneously from left to right direction.The bolded non-consecutive keywords are: spontaneous, standard conditions, galvanic cell, reduction potentials.

For more similar questions on topic Electrochemistry.

https://brainly.com/question/20513633

#SPJ11

30 POINTS HELP FAST

A scientist is using potassium-40, which is a radioactive isotope of potassium, to find the absolute age of a fossil by radiometric dating. The scientist determines that about three-fourths of the original potassium-40 atoms in the fossil now remain in the fossil. What additional information is necessary for the scientist to determine the absolute age of the fossil? Question 2 options: the half-life of potassium-40 the identity of an index fossil the atomic mass of potassium-40 the total mass of the fossil "choose a b c or d"

Answers

The additional information necessary is: "the half-life of potassium-40." for the scientist to determine the absolute age of the fossil.

What is Radiometric Dating?

Radiometric dating is a method used to determine the absolute age of rocks and fossils based on the decay of radioactive isotopes. The rate of decay of a radioactive isotope is measured in terms of its half-life, which is the time it takes for half of the original parent atoms to decay into daughter atoms.

In this case, the scientist needs to know the half-life of potassium-40 in order to calculate the absolute age of the fossil. By knowing the half-life of potassium-40, the scientist can determine how much time has elapsed since the fossil was formed based on the proportion of parent and daughter atoms present in the fossil.

Therefore, the correct answer is: the half-life of potassium-40.

To know more about fossil, visit:

https://brainly.com/question/30503344

#SPJ1

For the weak acid, identify the expression for the acid ionization constant Ka. Ο Κa= (H2O|HSO2)/(H,SO3] O Ka = [H3O+](HSO3) /H2SO3) O Ka = [H30*](HSO3")[S03?-) /(H2SO3) O KA= [H3O+] [HSO"][S02?") /(H2SO3]

Answers

For the weak acid, the expression for the acid ionization constant Ka is given by the equation O Ka = [H3O+](HSO3) /H2SO3.

How to find acid ionization constant Ka?

The acid ionization constant Ka of a weak acid HA is given by the equation shown below, where [H3O+] represents the hydrogen ion concentration of the solution, and [A-] represents the conjugate base of the acid. Ka = [H3O+][A-]/[HA]

It is possible to calculate the acid dissociation constant of a weak acid by measuring the degree of ionization of the acid. A higher degree of ionization indicates a stronger acid, while a lower degree of ionization indicates a weaker acid.

The acid ionization constant Ka is used to compare the strengths of various acids.

The correct option is O Ka = [H3O+](HSO3) /H2SO3). The acid ionization constant Ka for a weak acid is the equilibrium constant for the ionization reaction of the acid. The acid ionization constant for a weak acid, Ka, is expressed as:

Ka = [H3O+][A-]/[HA]

to know more about acid-base refer here:

https://brainly.com/question/23687757#

#SPJ11

Atoms can't be broken into smaller pieces and still retain the properties of that element. True or False?​

Answers

true

Explanation:

Atoms cannot be subdivided, created, or destroyed. Atoms of different elements can combine in simple whole number ratios to form chemical compounds.

Answer:

true

hdozhsienzidbxirbfifndirhfirbr

Nitrogen oxides are pollutants, and common byproducts of power plants and automobiles. NO2 can react with the NO in smog, forming a bond between the N atoms. Draw the structure of the resulting compound, including formal charges. Use this table to predict the energy of the bond in NO. about 200 kJ/mol about 400 kJ/mol about 600 kJ/mol Use the same table to predict the energies of the bonds in NO2. both are about 200 kJ/mol both are about 400 kJ/mol both are about 600 kJ/mol one is about 200 kJ/mol and the other is about 600 kJ/mol *indicates an energy that is an average for that type of bond in several different molecules.

Answers

The structure of the resulting compound from the reaction of NO and NO2 is the compound is known as dinitrogen pentoxide, N2O5.The bond energy in NO is about 631 kJ/mol.The bond energies in NO2 are both about 240 kJ/mol.

N2O5 is the chemical formula for dinitrogen pentoxide, often known as nitrogen pentoxide or nitric anhydride. It belongs to the family of chemicals known as binary nitrogen oxides, which simply consists of nitrogen and oxygen. It exists as colourless crystals that sublimate at a temperature just above ambient to produce a colourless gas. Dinitrogen pentoxide, an unstable and potentially harmful oxidant, was originally employed as a reagent for nitrations when dissolved in chloroform, but nitronium tetrafluoroborate has completely replaced it (NO2BF4).

N2O5 is a rare instance of a substance that can change its structure based on the environment. The solid is a salt, nitronium nitrate, consisting of distinct nitronium cations [NO2]+ and nitrate anions [NO3]−; although in the gas phase and under some other situations  it is a covalently-bound molecule.

For more such questions on dinitrogen pentoxide , Visit:

https://brainly.com/question/30873595

#SPJ11

Buffer solutions containing Na2CO3 and NaHCO3range in pH from 10.0 to 11.0. The chemical equation below represents the equilibrium between CO32- and H2O, and the table lists the composition of four different buffer solutions at 25°C.CO32- (aq) + H2O (l) ⇄ HCO3- (aq) + OH- (aq);​Kb= 2.1 × 10-4 at 25°CBuffer [NaHCO3] Na2CO3 pH1 0.150 0.100 ?2 0.200 0.200 10.323 0.100 0.100 10.324 0.100 0.200 ?Which of the following chemical equilibrium equations best shows what happens in the buffer solutions to minimize the change in pH when a small amount of a strong base is added?A. H3O+(aq) + OH−(aq) ⇄ 2 H2O(l)B. HCO3−(aq)+ OH−(aq) ⇄ CO32−(aq) + H2O(l)C. CO32−(aq) + H3O+(aq) ⇄ HCO3−(aq) +H2O(l)D. CO32−(aq) + H2O(l) ⇄ HCO3−(aq)+ OH−(aq)

Answers


The correct answer is D. [tex]CO_3^{2-}(aq) + H_ 2O(l) \rightleftharpoons  HCO_3^-(aq) + OH^-(aq)[/tex]. This chemical equilibrium equation best shows what happens in the buffer solutions to minimize the change in pH when a small amount of a strong base is added.

Buffer solutions containing [tex]Na_2CO_3[/tex] and [tex]NaHCO_3[/tex] range in pH from 10.0 to 11.0. The chemical equation given represents the equilibrium between [tex]CO_3^{2-}[/tex] and [tex]H_2O[/tex], and the table lists the composition of four different buffer solutions at 25°C. When a small amount of a strong base is added to a buffer solution, the pH will start to increase. This equation helps to minimize the change in pH by shifting the equilibrium so that the concentration of [tex]HCO_3^-[/tex] is increased. This decreases the concentration of [tex]OH^-[/tex] and the pH increases less than it would if the equilibrium had not shifted.

To know more about buffer solutions, click on below link:

https://brainly.com/question/24262133

#SPJ11

Indicate which substance in each of the following pairs of substances you expect to have higher entropy. assume that you have a mole of each substance and all substances are at the same temperature? a. H2S2(g) b. H2S2(l) [Choose] a. CsBr(s) b. Sro(s) [Choose] a. H2O(l) b. H2O2(l) [Choose ] a. SO3(g) b. SO3(s) [Choose]

Answers

H₂S₂(g) is expected to have higher entropy than H₂S₂(l). CsBr(s) is expected to have higher entropy than Sro(s). H₂O(l) is expected to have higher entropy than H₂O₂(l). SO₃(g) is expected to have higher entropy than SO₃(s).


What is Entropy?

The entropy of the substance is determined by the amount of randomness and disorder it has. The higher the entropy, the greater the randomness of the substance. At the same temperature and pressure, a pure solid has a lower entropy than a pure liquid, which in turn has a lower entropy than a pure gas. The entropy of a substance is determined by its physical state, molecular structure, and the quantity of the substance.
H₂S₂ is a chemical compound with two sulfur atoms and two hydrogen atoms. The state of H₂S₂(g) is a gas, and H₂S₂(l) is a liquid. Since the gas state is more disordered than the liquid state, H₂S₂(g) is expected to have higher entropy than H₂S₂(l).
Both CsBr(s) and Sro(s) are in the solid-state. However, CsBr(s) has a higher entropy than Sro(s) because it has more molecules. This means that CsBr(s) has a greater degree of randomness and disorder than Sro(s).
H₂O(l) and H₂O₂(l) are both liquid states, but H₂O(l) has higher entropy because it has more degrees of freedom. H₂O(l) can rotate and translate freely, while H₂O₂(l) has a rigid structure that does not allow for the same degree of movement.
SO₃(g) is in the gaseous state, while SO₃(s) is in the solid-state. At the same temperature, the entropy of SO₃(g) is greater than that of SO₃(s) because the gas state is more disordered than the solid-state.

Learn more about Entropy here:

https://brainly.com/question/20166134

#SPJ11

Which of the following indicates a spontaneous reaction under standard conditions? A) K = 8.6 x 10⁻². B) K = 7.9 x 10⁻⁸. C) K = 2.2 x 10².

Answers

A spontaneous reaction under standard conditions is indicated by the value of K being greater than 1. Thus, the answer to the given question is option C, K = 2.2 x 10².

Standard conditions- Standard conditions are a set of environmental conditions that are considered to be the standard conditions for conducting an experiment. They serve as a reference point to compare the effects of varying environmental conditions on the properties of a substance or the results of an experiment.

Standard conditions in chemistry are considered to be a temperature of 298K (25°C), a pressure of 1 atm (101.3 kPa), and a concentration of 1 mol/L (for solutions).

Spontaneous reaction- A spontaneous reaction is one that proceeds without any external force or intervention. That is, a spontaneous reaction proceeds without the need for energy input from an external source. In other words, it is an exothermic reaction where the products are more stable than the reactants.

The Gibbs free energy change of a spontaneous reaction is negative. The sign of ΔG indicates the spontaneity of a reaction. A negative value indicates that the reaction is spontaneous, whereas a positive value indicates that the reaction is non-spontaneous. The value of ΔG° is used to determine the spontaneity of a reaction under standard conditions.

To learn more about "spontaneous reaction", visit: https://brainly.com/question/6843797

#SPJ11

what terms complete this analogy:_ is too strong base as _ is to weak base?
A. Partial dissociation; Full dissociation
B. Full dissociation; Partial dissociation
C. Arrhenius; Bronsted Lowry
D. Weak electrolyte, Strong electrolyte

Answers

The correct answer is D.

A strong base is a substance that completely dissociates into its ions in water, producing a high concentration of hydroxide ions (OH-). Similarly, a weak base is a substance that only partially dissociates into its ions in water, producing a low concentration of hydroxide ions (OH-).

The term that completes the analogy is "Weak electrolyte", which is a substance that only partially dissociates into its ions in water and conducts electricity poorly. A strong electrolyte, on the other hand, is a substance that completely dissociates into its ions in water and conducts electricity well.

Therefore, the analogy can be completed as follows:

"Strong base is to weak base as strong electrolyte is to weak electrolyte."

I hope it helped you :)

Which concept accounts for the whole-number subscripts in chemical formulas?A. law of multiple proportionsB. Avogadro's lawC. conservation of energyD. conservation of matte

Answers

Answer:

A)law of multiple proportions

Explanation:

A 32.0 mL sample of hydrogen is collected over water at 20.0 degrees Celsius and 750.0 torr. What is the volume of the dry gas at STP? (Vapor pressure of water at 20 degrees C = 17.5 torr)

Answers

The volume of the dry gas at STP when a 32.0 mL sample of hydrogen is collected over water at 20.0 degrees Celsius and 750.0 torr is 31.1 mL.

What is the formula to calculate the volume of the dry gas at STP?

There is a formula used to calculate the volume of dry gas at STP given a sample of hydrogen gas collected over water at a specific temperature and pressure, which is as follows:

Vd = Vw - Vh2o

Vd = volume of the dry gas, Vw = volume of the wet gas, Vh2o = vapor pressure of water at a given temperature

The next thing is to calculate Vw which is the volume of the wet gas.

Vw = Vtotal - Vh2o

Vtotal = total volume of the gas collected, Vh2o = volume of the water collected

In the question, the volume of the hydrogen gas collected over water at 20.0 degrees Celsius and 750.0 torr is 32.0 mL.

Vh2o = P × V / R × T

where, P = pressure = 17.5 torr, V = volume of the water collected = 0.0 mL (not given)

Vh2o = 0.0 torr × mL / 62.36 (L•torr/K•mol) × (293.15 K) = 0.0 mL

The total volume of the gas collected, Vtotal = Vh2o + Vw + Vh2 = 0.0 mL + 32.0 mL + 0.0 mL = 32.0 mL

Now we can calculate Vw as follows: Vw = Vtotal - Vh2o = 32.0 mL - 0.0 mL = 32.0 mL

Finally, we can calculate the volume of the dry gas at STP: Vd = Vw - Vh2o

Vd = 32.0 mL - 0.9 mL ≈ 31.1 mL

Therefore, the volume of the dry gas at STP when a 32.0 mL sample of hydrogen is collected over water at 20.0 degrees Celsius and 750.0 torr is 31.1 mL.

Learn more about Volume of gas here:

https://brainly.com/question/24189159

#SPJ11

Other Questions
Detective Smith wants to bring a forensic geologist to help her with her current case. Why does the detective most likely need assistance? bryan has type 2 diabetes. which of the following conditions is a typical sign or symptom of this chronic disease? Less than normal need to urinateCraving for salty foodsFewer than normal red blood cellsExcessive thirst one category of risk that is considered in an enterprise risk management program is the risk associated with an organization's property, liability, and personnel-related loss exposures. this risk is called Find the equation of the line with the slope 5 which goes through the point (8,5) How does the story impacts her understanding of being Asian American? The myth of my familys laundromat the ietf (internet engineering task force) is responsible for developing and overseeing internet standards. which of the following is not a common protocol maintained by the ietf? help me and thank you In a paragraph, describe the economic, social, and political changes in the U.S.after World War II. which of the following are the ways to select or prepare potatoes that will produce a slower rise in blood glucose? collecting new data for the purpose of answering a specific question or set of questions is known as research the national center for heatlh has found that there is a 0.41% chance that an american citizen will die from falling. what is the probability that you will not die from a fall? you deposit 2500 into an account that pays 2% annual interest compounded montly. algebraically find, to the narest tenth of a year, how long it will take for the balance to double who gave a speech to congress speaking out against the compromise of 1850? penultimate manufactures luxury pens. one of its new products, the green dream scriber, is advertised to be 100% biodegradable unlike its competitors' pens due to a unique case and special ink compound that makes the pen biodegradable. after receiving complaints of fraud, the federal trade commission (ftc) determines that the pen is made from materials similar to that found in most luxury pens and is not biodegradable. the ftc orders penultimate to run an ad admitting that its advertisements were misleading and remove the untrue information from its advertisements. in this scenario, which of the following remedies is used by the ftc? question 72 options: corrective advertising cease and desist advertising comparative advertising social advertising parody advertising a restaurant bill before tax is 15.50 how much is 15% tip for this bill In the declaration of independence, what was Thomas major claim and the support given in the Declaration. In your opinion, is the support sufficient for the claim? Does it have to be? 7Toluene (C7H8) is one of the components of crude oil. Which shows thebalanced combustion reaction for toluene?A. C7H8 +902 7CO2 + 4HO + heatOB. C7Hg + O2 CO + HO + heatC. C7Hg + 0 7CO2 + 4HO + heatOD. CHg +7.502 7CO2 + HO + heatSUBMIT4 The diagram shows a homemade car being pushed with a force of 25 N. otc drugs that cause the keratin layer of the skin to peel away are used for which of the following purposes? why might a corporation or government issue a bond?