Watch glass is used in weighing desired amount of solid.
Watch glass is majorly used in weighing desired amount of solid that is to be used in chemical reaction, a watch glass is often placed on the scale, which is then followed by taring or zeroing of the scale so that only the weight of the sample substance is obtained excluding the weight of the watch glass. A watch glass is not only used for observing precipitation patterns and crystals, it is also used for drying solids.
A watch glass is generally round in shape, it is concave glass dish which is used for evaporation in chemistry. Watch glass can also be employed for weighing solids and as a lid for flasks and beakers.
Hence, watch glass is one of the useful component of chemistry lab.
Learn more about watch glass from the link given below.
https://brainly.com/question/10936221
#SPJ4
what is universal solvent definition?
Generally, water is known as the universal solvent.
Water is known as the universal solvent because basically at the molecular level, salt basically dissolves in water due to electrical charges and due to the fact that both water and salt are the compounds which are polar, and with positive and negative charges on opposite sides in the molecule. It is true that universal solvent does not exist. Water is basically known as the universal solvent because it dissolves more chemicals than any other solvent. However, water is the solvent that only dissolves with other polar molecules.
This property of water usually allows the water molecule to become attracted to many other different types of molecules and it behaves as a solvent for every solute.
Learn more about universal solvent from the link given below.
https://brainly.com/question/1834245
#SPJ4
Identify the color absorbed by a solution that appears the color given Green Orange BlueRed
Orange = Blue, Green = Red, Blue = Orange, and Red = Green in a solution that takes on the appearance of the hue provided. Orange Green Blue Red
Is color reflected or absorbed?The wavelengths that are reflected or transmitted create the colors we perceive. For instance, a red garment appears red because the fabric's dye molecules have absorbed light waves from the violet/blue end of the spectrum.
Which shade is absorbent?Since light is energy, the more light the thing takes in, the more heat is taken in. Black is the color that absorbs the greatest heat, if color is a thing. All light's wavelengths are absorbed and none are reflected by a dark object. White objects, on the other hand, reflect all light wavelengths and hence absorb the least heat.
To know more about color absorbed visit:
https://brainly.com/question/30654395
#SPJ4
Part D
Calculate the following for test tube 1 and for test tube 2, and record the results in the table:
the number of moles of copper(II) sulfate used (Use 159.60 grams/mole as the molar mass of copper(II) sulfate.)
the heat absorbed by the water, in joules (Use Q = mCΔT, where 10.0 milliliters of water has a mass of 10.0 grams. Use 4.186 joules/gram degree Celsius as water’s specific heat capacity.)
the change in internal energy of the copper(II) sulfate (Assume that the energy released by the copper(II) sulfate is absorbed by the water.)
the reaction enthalpy, in joules/mole
The heat absorbed by the water is 351.96 joules.
What is specific heat capacity?The heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree) is called specific heat capacity.
Given is to find the heat absorbed by the water, in joules.
We can write the heat absorbed as -
Q = mCΔT
Q = 10 x 4.186 x 8.4
Q = 41.9 x 8.4
Q = 351.96 joules
Therefore, the heat absorbed by the water is 351.96 joules.
To solve more questions on specific heat capacity, visit the link-
brainly.com/question/29014197
#SPJ1
What is the Lewis symbol for O 2 −?
The Lewis symbol consists of two dots representing electrons surrounding the chemical symbol for oxygen (O). This represents the distribution of electrons in the O2- ion, where oxygen has gained two electrons to form a negative ion.
The Lewis symbol for O2- would be:
O
. .
What is lewis symbol ?
Lewis symbol is a simple representation of the electron configuration of an atom. It is named after the chemist Gilbert N. Lewis who first introduced this notation in 1916.
Lewis symbol consists of the chemical symbol for the element surrounded by dots representing the valence electrons of the atom. The number of dots is equal to the number of valence electrons in the neutral atom.
These dots are arranged in pairs to represent the electrons in the chemical bonds between atoms. By convention, the dots are placed on the side of the symbol that corresponds to the side of the bond that the electron is approaching.
Learn more about Lewis symbol here: brainly.com/question/20300458
#SPJ1
A certain reaction occurs in the following steps.(i) Cl(g) +O3(g) →ClO (g) +O2(g)Identify the reaction intermediate and write the chemical equation for overall reaction.
Since it is created in the first step and used up in the second, Clo (g) is the reaction intermediate. O 3 (g)+O (g)2O 2 is the overall reaction (g)
What is reaction intermediate?
A reaction intermediate, also known as an intermediate, is a molecular entity that is created from the reactants (or previous intermediates) in chemical reactions that take place in steps and have several elementary steps. Although they represent the end result of one elementary step's reaction, intermediates do not appear in the chemical equation for the whole chemical equation. According to the IUPAC Gold Book, an intermediate is a substance that is generated (directly or indirectly) from the reactants and undergoes additional reactions to give rise to (either directly or indirectly) the products of a chemical process. Its lifetime exceeds that of a molecular vibration.
To learn more about reaction intermediate visit;
https://brainly.com/question/2548204
#SPJ4
How many moles of nitrogen (N2) are required to produce 32.4 grams of NH3 ?
Answer: B
Explanation: Took the test
A steel cylinder has a volume of 246 cm3 and a density of 7. 93 g/cm3. What is its mass in kilograms?.
The mass of the steel cylinder is 1.939 kilograms. The mass of an object can be calculated by multiplying its volume by its density.
The volume of the steel cylinder is 246 cm3 and its density is 7.93 g/cm3, so its mass can be calculated as follows:
mass = volume x density = 246 cm3 x 7.93 g/cm3 = 1,939.38 gSince 1 kilogram is equal to 1000 grams, we can divide the mass in grams by 1000 to get the mass in kilograms:
mass (kg) = mass (g) / 1000 = 1,939.38 g / 1000 = 1.939 kgSo, the mass of the steel cylinder is 1.939 kilograms.
Learn more about Volume:
https://brainly.com/question/12410983
#SPJ4
Which one of the following gases would deviate the least from ideal gas behavior? A) CO2 B) F2C) CH3CID) Ne E) Kr
The gas that would deviate the least from ideal gas behavior is Ne (Neon).
Neon is a noble gas and has no permanent dipole-dipole interactions, making it behave most like an ideal gas.Neon is a diatomic molecule, meaning it is composed of two atoms, and its molecules are not very polar or reactive.Neon is a noble gas element with the atomic number 10 and symbol Ne. It is odorless, colorless, and gas at room temperature and pressure. It is used in a variety of applications, including electric signs, fluorescent lamps, high-voltage indicators, lightning arresters, welding, and lasers. It is also used in cryogenics and in some medical treatments.
learn more about Neon Refer:brainly.com/question/14310402
#SPJ4
Kidney stones can form in the human body if too much soda is consumed. Phosphoric acid can
react with calcium nitrate to form a painful solid. How many moles of phosphoric acid are needed to react with 85 grams of calcium nitrate?
The number of moles of phosphoric acid is 0.35 moles
What is a kidney stone?A kidney stone is a hard, solid mass that forms in the kidneys or urinary tract. Kidney stones are made up of minerals and salts that are normally found in the urine, but when they become concentrated, they can form solid crystals that can grow in size.
Kidney stones can vary in size and shape, and can be as small as a grain of sand or as large as a golf ball. They can be located anywhere in the urinary tract, from the kidneys to the bladder, and can cause significant pain and discomfort as they pass through the ureters and urethra.
The reaction equation is;
3Ca(NO3)2 + 2H3PO4 → Ca3(PO4)2 + 6HNO3
Number of moles of calcium nitrate = 85 g/164 g/mol
= 0.52 moles
If 3 moles of Ca(NO3)2 reacts with 2 moles of H3PO4
0.52 moles of Ca(NO3)2 reacts with 0.52 * 2/3
= 0.35 moles
Learn more about kidney stones:https://brainly.com/question/29473472
#SPJ1
The nuclei of large atoms, such as uranium, with 92 protons, can be modeled as spherically symmetric spheres of charge. The radius of the uranium nucleus is approximately 7.4 x 10^-15 metersWhat is the electric field this nucleus produces just outside its surface?Express your answer using two significant figures._________?????____N/C
The magnitude of the electric field is 2.4 X 10^21 N/C.
Large atoms' nuclei, like that of uranium, which has 92 protons, can be represented as spherically symmetric spheres of charge. Around 7.4 10 15 meters, or 7.4 10 15 meters, is the uranium nucleus' radius.
What is an Electric field?The physical field that surrounds electrically charged particles and exerts a force on all other charged particles in the field, either attracting or repelling them, is known as an electric field (or E-field). It can also refer to a system of charged particles' physical field.
The magnitude of the electric field is 2.4 X 10^21 N/C.
To learn more about the electric field, here
brainly.com/question/8971780
#SPJ4
because biomass decreases by about 90% at each trophic level moving up.
The reason why biomass decreases by about 90% at each trophic level moving up is due to the inefficiency of energy transfer between trophic levels.
At each trophic level, organisms consume other organisms to obtain the energy they need to survive. However, as energy is transferred from one organism to another, some of it is lost as heat or used for metabolic processes like respiration, leaving less energy available for growth and reproduction.
The decrease in available energy is reflected in the decrease in biomass, which is the total amount of living matter in an ecosystem. As a result, there is less biomass at each successive trophic level. This pattern is sometimes referred to as the "pyramid of biomass."
In general, only about 10% of the energy available at one trophic level is passed on to the next trophic level, resulting in the 90% decrease in biomass at each level. This inefficiency of energy transfer is a fundamental characteristic of ecosystems and has important implications for the structure and function of ecological communities.
To know more about biomass here
https://brainly.com/question/10405411
#SPJ4
The crystallization step of recrystallization removes which category of impurities?
The washing step of recrystallization removes which category of impurities?
The crystallization step of recrystallization removes the impurities present within the crystal lattice.
The washing step of recrystallization removes the impurities present on the surface of solid.
The solute crystallizes out when the solvent cools and the solution gets saturated with the solute (reforms a solid). Impurities are eliminated from the crystal lattice as the crystal grows, concluding the purification procedure. After that, the crystals can be gathered, cleaned, and dried.
Because the impurities won't crystallize quite yet and instead remain in the solution, the impure substance will crystallize in a purer form. The more pure crystals must now be separated using a filtration procedure. It is possible to repeat the process.
To know about impurities
https://brainly.com/question/16887262
#SPJ4
what is cloud computing
Answer:
Cloud computing (English: cloud computing) is the general name of internet-based computing services for computers and other devices that provide computing resources that can be used at any time and shared among users. In this respect, cloud computing is not a product, but a service; By providing the sharing of software and information in the basic source, the existing information service; computers and other devices, similar to electrical distributors, over a computer network (typically the Internet).
Explanation:
Identify the color absorbed by a solution that appears the color given Green Choose Orange Choose Blue Choose Red choose
The color absorbed by a solution that appears the color given Green is Red.
The many colors we can see are caused by the various wavelengths that are present in the visible spectrum. We can recall the colors red, orange, yellow, green, blue, indigo, and violet by using the abbreviation "ROYGBIV." The figure below shows these in reverse order. Red is the least vibrant color, whereas violet is the strongest.
According to the graph, 550 nm light would appear green to us if it were shone upon us. White is made up of all the light wavelengths, hence it is not included in our visible spectrum. A nice illustration is a light bulb. Because it emits at least some of all the visible wavelengths, it appears white.
You can also learn about visible spectrum from the following question:
https://brainly.com/question/18704022
#SPJ4
During one cycle, the sodium potassium pump binds and moves?
During one cycle, the sodium potassium pump binds and moves 3 Na⁺ out of and 2K⁺ into the cell. Option B is correct.
The sodium-potassium pump is an essential membrane protein that helps to maintain the electrochemical gradient across the cell membrane of all animal cells. In each cycle of the pump, three sodium ions (Na+) are pumped out of the cell, while two potassium ions (K+) are pumped into the cell.
This movement of the ions will requires energy in the form of ATP hydrolysis. The resulting electrochemical gradient is important for various cellular processes, including nerve impulse transmission, muscle contraction, and osmoregulation.
Hence, B. 3 Na⁺ out of and 2K⁺ into the cell is the correct option.
To know more about sodium potassium pump here
https://brainly.com/question/8507057
#SPJ4
--The given question is incomplete, the complete question is
"During one cycle, the sodium potassium pump binds and moves; a) 2 Na⁺ into and 2 K⁺ out of the cell b)3 Na⁺ out of and 2K⁺ into the cell c)2 Na⁺ out of and 3 K⁺ into the cell d) 1 Na⁺ into and 2 K⁺ out of the cell e) 3 Na⁺ into and 3 K⁺ out of the cell"--
What is the bond line structure?
The bond line structure, also known as the skeletal formula or stick diagram, is a type of molecular structure representation used in Chemistry.
It is a simplified way to show the bonding between atoms in a molecule without explicitly drawing each atom or bond. Instead, the bond line structure uses lines to represent the bonds between atoms, with the atoms themselves implied at the end or intersection of the lines.
For example, in the bond line structure of ethane (C₂H₆), the two carbon atoms are represented by the ends of a line and the six hydrogen atoms are implied at the ends and intersections of the lines.
This makes the bond line structure a more compact and efficient way to represent molecules compared to other methods, such as the Lewis structure.
To know more about bond line structure here:
https://brainly.com/question/24102840#
#SPJ11
The oxidation state of manganese in this compound is , and the chemical formula of the compound is.
An alloy of a transition metal is manganese (III) oxide. The chemical formula of this molecule is Mn2O3, and the oxidation state of the manganese in it is +3.
Because manganese is a transition metal, as it chemically reacts with oxygen, the electrons will be taken up as it loses valence electrons to achieve stability. It will consequently result in the creation of an ionic compound. Mn in this molecule has an oxidation state of +3 and oxygen has an oxidation state of -2. As a result, manganese (III) oxide can be classified as a transition metal complex. The chemical formula of the compound is, and the oxidation state of the manganese in it is +3.
Learn more about oxidation state here:
https://brainly.com/question/13284464
#SPJ4
Complete question:
Manganese (III) oxide is a transition metal compound. The oxidation state of manganese in this compound is _______ , and the chemical formula of the compound is __ __ __ __.
An object's position in a given coordinate system is described by the vector r = t2 i - (3t + 3) j. Assume the object moves without air resistance.
The object's displacement for the given time period exists 8i - 6j.
What is meant by resistance?A circuit's opposition to current flow is measured by its resistance. The Greek letter omega (Ω) stands for ohms, which are used to measure resistance.
The given parameter be
[tex]$$\begin{aligned}& r=t^2 i-(3 t+3) j \\& \mathrm{t}_1=1 \mathrm{~s} \\& \mathrm{t}_2=3 \mathrm{~s}\end{aligned}$$[/tex]
When the time is 1 s, the object's position is determined as follows:
[tex]$$\begin{aligned}& r_1=(1)^2 i-(3 \times 1+3) j \\& r_1=i-(6) j \\& r_1=i-6 j\end{aligned}$$[/tex]
When the time is 3 s, the object's position is determined as follows:
[tex]$$\begin{aligned}& r_2=(3)^2 i-(3 \times 3+3) j \\& r_2=9 i-(9+3) j \\& r_2=9 i-12 j\end{aligned}$$[/tex]
The displacement of the object exists estimated as;
Δr = [tex]$$r_2-r_1[/tex]
substitute the values in the above equation, we get
Δr = 4i - 9j - (i - 6j)
simplifying the equation, we get
Δr = 9i - 12j - i + 6j
Δr = (9i - i) + (-12j + 6j)
Δr = 8i - 6j
Therefore, the object's displacement for the given time period is 8i - 6j.
To learn more about resistance refer to;
https://brainly.com/question/800502
#SPJ4
Which do scientists study to determine air temperature at the time it was formed? Select the two correct answers.
Fossilized pollen
air bubbles trapped in ice
tree rings
chemical isotopes in foraminifera shells
Scientist study determines air bubbles trapped in ice and tree rings air temperature at the time it was formed.
Option B and C are correct.
Climate climatology is the study of how climate changes over time. The atmospheric factors that influence weather patterns and temperature variations over time are better understood thanks to this research.
Why is the foraminifera fossil record important to oil exploration?They make it possible to connect rocks from different places, which is important when making geological maps, looking for oil or gas, and building big civil engineering projects. The fossils' ages revealed when the ocean was extremely cold. By finding cold-water foraminifera of the same age in other seas, scientists can create maps that show where cold water was at various points in Earth's history.
Incomplete question :
Which do scientists study to determine air temperature at the time it was formed? Select the two correct answers.
A.Fossilized pollen
B.air bubbles trapped in ice
C.tree rings
D.chemical isotopes in foraminifera shells
Learn more about fossilized pollen :
brainly.com/question/14242963
#SPJ1
give the term for the amount of solute in moles per kilogram of solvent.
Molality is term used for the amount of solute in moles per kilogram of solvent.
Generally, molality (m) is defined as the number of moles of solute per kilogram of solvent.
The formula for molality is given as:
Molality (m) = moles of solute / kilograms of solvent.
Students must remember that molality is used to measure the moles in relation to the mass of the solvent and not the mass of the solution.
Molality can also be defined as the “total moles of a solute contained in a kilogram of a solvent.” The other name of molality is also known as molal concentration which is a measure of solute concentration in a solution.
Learn more about molality from the link given below.
https://brainly.com/question/26921570
#SPJ4
(big points) if anybody sees this can they help me out?
P*V = n*R*T
P = pressure
V = volume
n = number of moles
R = the universal gas constant
T = temperature in degrees Kelvin
This equation is known as the ideal gas law, and it can be used to predict the behavior of many gases at relatively low pressure.
From this equation, you can see that as the temperature of a gas increases,
Question 1 options:
either the pressure of the gas, the volume of the gas, or both, will decrease.
either the pressure of the gas, the volume of the gas, or both, will increase.
the number of moles of gas will go down.
the pressure of the gas increases.
Question 3 (1 point)
In a process called electrolysis, an electric current passed through water causes hydrogen gas and oxygen gas to be evolved. The unbalanced reaction below shows this process:
If a 0.75 mol sample of water is electrolyzed until all the liquid water is gone, what volume of oxygen gas is produced at 100°C and 1 atm?
R = 0.08206 L * atm/mol * K
Question 3 options:
A) 11.5 L
B) 3.08 L
C) 114.8 L
D) 0.375 L
According to Dalton's Law of Partial Pressures, the pressure of oxygen in dry air would be
Question 4 options:
A) 2.12 kPa
B) 21.22 kPa
C) 21.00 kPa
D) 21 kPa
Question 5 (1 point)
Curious Carl's chemistry teacher handed him a sealed flask containing two gases, oxygen and hydrogen. The pressures of the two gases are 8.00 atm and 1.00 atm, respectively.
What is the total pressure of the combined gases?
Question 5 options:
A) 1.00 atm
B) 8.00 atm
C) 7.00 atm
D) 9.00 atm
Question 6 (1 point)
Ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen and hydrogen over an iron catalyst. The reaction is represented by this equation:
If the total pressure of nitrogen and hydrogen in the tank before the reaction is 4200 kPa, what is the partial pressure of the nitrogen gas? [Assume there would be no excess reagent if the reaction went to completion.]
Question 6 options:
A) 2100 kPa
B) 1400 kPa
C) 3150 kPa
D) 1050 kPa
Question 7 (1 point)
A compressed air tank carried by scuba divers has a volume of 8.00 L and a pressure of 141 atm at 22.0°C. What is the volume (in liters) of air in the tank at STP?
A) 993 L
B) 1224 L
C) 1280 L
D) 1044 L
Question 8 (1 point)
Piston changing volume
A 2.5 liter volume of carbon dioxide gas is held at constant temperature and at 100 kPa of pressure. Gradually the pressure is increased to 500 kPa. What is the new volume of carbon dioxide gas?
A) 12.5 liters
B) 5 liters
C) 0.5 liters
D) 4 liters
Question 9 (1 point)
At one atmosphere of pressure and 25°C, a hot air balloon has a volume of 4,000 liters. While still tied to the ground, the air in the balloon is heated to 68°C. When the balloon is untied, ready to float away, it has a new volume of
Question 9 options:
A) 4577 liters
B) 9280 liters
C) 3496 liters
D) 1088 liters
What is average kinetic energy of 1 mole of so at 300 K?
4578J/mol
4672J/mol
3452J/mol
2289J/mol
3452 J/mol is the average kinetic energy of 1 mole of so at 300 K. So, option C. 3452 J/mol is correct choice.
One mole of gas has an average kinetic energy of, which can be calculated using the formula below:
[tex]KE_{avg} = (3/2) \times R \times T[/tex]
where
[tex]KE_{avg}[/tex] is the average kinetic energy,
R is the gas constant,
T is the temperature in Kelvin.
We must convert from mass-based units to mole-based units for SO gas (sulfur monoxide) using the molar mass of SO. SO has a molar mass of around 64 g/mol.
Therefore, 1 mole of SO gas has a mass of nearly 64 grams.
When we enter the values into the formula, we obtain:
[tex]KE_{avg} = (3/2) \times R \times T[/tex]
[tex]= (3/2) \times 8.314 J/(mol \:K) \times 300 K[/tex]
= 3742 J/mol
Hence, 1 mole of SO gas has an average kinetic energy of around 3742 J/mol at 300 K.
The closest solution from the offered possibilities is 3452 J/mol.
For similar questions on average kinetic energy,
https://brainly.com/question/26080657
#SPJ4
What is the ion formula for nitrate?
The formula for Nitrate ion is [tex]NO^{3-}[/tex]. This is a polyatomic ion containing nitrate ion. It is called Nitrate oxo-anion.
[tex]NO3^{-}[/tex] is a nitrogen oxo-anion, a member of reactive nitrogen species and a monovalent inorganic anion. This ion is a polyatomic anion with the empirical formula NO3- and a molecular mass of 62.01 Daltons. The ion consists of one central nitrogen atom surrounded by three identical oxygen atoms in a trigonal planar arrangement. It carries a negative one formal charge. It carries negative charge because the single bound oxygen atoms have nine electrons linked with them moreover they have a negative charge overall. That means the nitrate ion has an overall charge of -1. The bond order of nitrate ion can be calculated using its Lewis dot structure. Bond order is the total number of bonds number of bonds group. In NO3- ion there are four N - O bonds and three bond groups.
To learn more about Nitrate ion please visit:
https://brainly.com/question/28343814
#SPJ4
What factors determine the direction and rate of a chemical reaction?
The factors that determine the direction and rate of a chemical reaction are:
The change in free energy will determine the direction of the reaction.Catalysts influence the rate of a chemical reaction.Thermodynamics governs the direction of a reaction but not the rate of a reaction.What is rate of a chemical reaction?The rate of a chemical reaction is calculated by dividing the rate of change in a reactant's or product's concentration by the coefficient from the equation's balanced state.
The term "rate of a reaction" refers to how quickly a reaction occurs. For instance, because it happens quickly, wood burning has a high reaction rate, whereas iron rusting has a low reaction rate because it happens gradually.
Learn more about chemical reaction at:
https://brainly.com/question/11231920
#SPJ1
a 2.30 L solution contains 545.0 grams of Na2SO4 what is the molarity of this solution
The molarity of the solution is 1.6687 M. This show that every liter of solutions containing 1.6687 mol of sodium sulfate.
ExplanationGiven data:
V = volume of the solutions.Formula:
[tex]\bf M = \dfrac{n}{V}[/tex]
M = molarity, M.n = moles number, moles.V = volume of the solutions, L.Therefore:
First, calculate the molecular mass (Mr) of Na₂SO₄.
Mr Na₂SO₄ = 2 x Ar Na + Ar S + 4 x Ar OSecond, calculate the mole of Na₂SO₄.
[tex]\begin{array}{ll}\sf n &\sf = \dfrac{g}{Mr}\\\\&\sf = \dfrac{545}{142}\\\\&\sf = 3.84~mol.\end{array}[/tex]
Last step, calculate the molarity.
[tex]\begin{array}{ll}\sf M~Na_2SO_4 &\sf = \dfrac{n}{V}\\\\&\sf = \dfrac{3.84}{2.30}\\\\&\sf = 1.6687~M.\end{array}[/tex]
Learn more about other calculation of the concentration (in M) on:
https://brainly.com/question/14469428
how many moles are there in 5.5x10^24 atoms of iron
Answer: 95.8 I hope this helps U :)
Explanation: Therefore 0.552 moles will have 0.552 moles X 6.022 X10 23 atoms/mole... are present in 1.52 mol of sulfur dioxide a) 2.29 x 10^23 b) 1.83 x 10^24 c) ... Mass of 1 H atom: 1.008 amu x 1.661 x10-24 g/amu = 1.674 x10-24 g. Mass of 1 mole of H ... many iron atoms are present in a piece of iron weighing 95.8 g?
Why do atoms typically bond with others?
Answer:
Opposite charges attract both within the same atom and between atoms.
Explanation:
Hope this helps :)
According to kinetic molecular theory, what happens to the movement and arrangement of molecules in a sample when they are heated from a liquid to a gas phase?
a
The particles move faster and spread out more.
b
The particles move faster and closer together.
c
The particles move slower and closer together.
d
The particles move slower and farther apart.
According to kinetic theory of gases, when samples are heated from liquid to gas phase, particles move faster and spread out more. Hence, option a is correct.
What is kinetic theory of gases ?According to kinetic theory of gases. Gaseous substances are made of tiny particles called molecules. The molecules within a container are in a state of random chaotic motion during which they collide with each other.
At, a particular instant, different molecules in a sample of gas may have different velocities and hence, different kinetic energies. The kinetic energy of molecules is directly proportional to the temperature.
Hence, the the sample when heated, the molecules acquire higher kinetic energy and they will move apart. Therefore, option a is correct according to kinetic theory.
Find more on kinetic theory :
https://brainly.com/question/15357425
#SPJ1
How many moles are in 1.204 x 1024
atoms of zinc?
[?] moles
Report your answer with the appropriate number of
significant figures.
Moles of Zinc
Enter
The answer is 20.00 moles
What is moles?
Mole is a very important unit of measurement that chemists use.
To calculate the number of moles in 1.204 x 10^24 atoms of zinc, we need to use Avogadro's number, which is 6.022 x 10^23 atoms/mole.
First, we can calculate the number of moles by dividing the number of atoms by Avogadro's number:
1.204 x 10^24 atoms / 6.022 x 10^23 atoms/mole = 20 moles
Therefore, there are 20 moles in 1.204 x 10^24 atoms of zinc.
Since the given value has four significant figures, we should report our answer with four significant figures as well. Therefore, the answer is:
20.00 moles
Learn more about moles here : brainly.com/question/13314627
#SPJ1
The molecular formula for the simple sugar glucose is C6H12O6. What compound represents the empirical formula for glucose?
The basic sugar glucose has the chemical formula C6H12O6. In terms of an empirical formula, CH2O represents glucose.
The empirical formula for a compound represents the simplest whole-number ratio of atoms in the compound.
As per the details provided in the above given question,
To determine the empirical formula of glucose, we need to divide the subscripts in the molecular formula by the greatest common factor (GCF) of those subscripts.
The subscripts of C6H12O6 can be divided by 6 to get the simplest whole-number ratio:
C6H12O6 ÷ 6
Further we get,
= CH2O
Therefore, the empirical formula for glucose is CH2O.
For such more question on glucose
https://brainly.com/question/397060
#SPJ4