There are 11 protons in an isotope of sodium with the mass number of 25.
What is meant by isotopes?Atoms with same number of protons but different numbers of neutrons are called as isotopes. They share almost the same chemical properties, but have different masses and therefore physical properties.
Isotopes are atoms belonging to same element, having same atomic number Z, but different mass number A. For example, carbon-12, carbon-13 and carbon-14 are three isotopes of element carbon with mass numbers as 12, 13 and 14 respectively. How do you identify an isotope?
Generally, isotopes are specified by the name or symbol of the particular element and immediately followed by a hyphen and mass number.
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Which of the following liquids would make a good solvent for iodine, I2? A) H20 B) HCi C) NH3 D) CH OH E) CS
CS₂ is the liquids that would make a good solvent for iodine.
What is solvent?Many processes are aided by solvents, which are substances that dissolve solutes and generate solutions. They are used for a variety of purposes, including extractions, dry cleaning, and painting. They can be as non-hazardous as water or as dangerous as dichloromethane. The material in which a solute dissolves to form a homogenous mixture. The material that dissolves in a solvent to form a homogenous mixture is referred to as a solute. Solvents often used include water, ethanol, methanol, and acetone. A'solvent' is a substance that has the ability to dissolve a given solute in order to form a solution with it.
Here,
CS2 is a liquid that might be an excellent iodine solvent.
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Rank the following atmospheric pollutant gases in order of increasing root-mean-square speed. Question List (4 items) (Drag and drop into the appropriate area) No more items RMS speed order
Because root mean square velocity '=((3RT)/(M))(1/2)', CO' gas is a gas. For example, "RMS prop ((1)/(M))(1/2)" The highest "RMS" velocity is exhibited by "CO," which has the lowest molecular mass.
Alternating currents and voltages are one of the main areas where RMS values are applied. An AC voltage's value continuously fluctuates between zero and its positive peak, through its negative peak, and back to zero. The RMS value is the accurate measurement of a fluctuating voltage or current. The square root of the temperature and the molar mass have direct and inverse relationships with the rms velocity, respectively. Thus, increasing the temperature of a gas by fourfold causes the molecules' average motion to double.
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An experiment will
start with 15g of
carbon and 75g of
oxygen. What is the
predicted mass of the
product?
Only when the masses of the reactants and products are equal can a chemical reaction occur.
How do you predict the mass of a product?Product mass is equal to reactant mass. The term "moles" should be inserted between each coefficient and formula so that the equation can be read in "moles." An equation's "mole-mole factor" is the ratio of the moles of any two substances.
A chemical reaction can only take place if the mass of the reactants and products are equal. Therefore, if you start with a specific mass and it interacts, the products will have the same mass.
Examine what transpires when the chemical splits into smaller, more recognizable products like water, carbon dioxide, or any of the gaseous elements in order to forecast the outcomes of such a reaction. Synthesis reactions frequently happen when pure elements are mixed.
The complete question is:
An experiment will start with 15g of carbon and 75g of oxygen. What is the predicted mass of the product?
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What volume of 0.500 M HCl is needed to reach the first equivalence point?
A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl.
pKb1=4.22
pKb2=8.67
The Ph at the first equivalence pt is 7.56.
The goal of the titration is to identify the equivalence point, or the point at which chemically equivalent amounts of the reactants have been combined.
What do you mean by titrated?According to the definition of titration, it is "the method of estimating the amount of a material A by adding calibrated increments of substance B, the titrant, with which it reacts until exact chemical equivalency is obtained (the equivalence point)".
Titration is a method of chemical analysis where the amount of a sample's ingredient is determined by adding an exact known amount of a different substance to the measured sample, which the desired constituent reacts with in a specific, known proportion.
The equivalence point, or the point at which chemically equivalent amounts of the reactants have been combined, is to be found through titration. Depending on the stoichiometry of the reaction, the number of reactants that have been combined at the equivalence point.
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How many Liters of 0.85M H2SO4 are needed to completely dissolve 5.50g of Calcium Hydroxide?
The frequency of the cesium-133 atom's ground state is 9,192,631,770 hertz, which is equivalent to a period of 1/9,192,631,770 seconds, or approximately 0.0000000011 seconds. Therefore, the length of 9,192,631,770 radiation periods of the cesium-133 atom's ground state is approximately 0.00000099 seconds.
What is the length?
The length of a 100-word essay that is plagiarism-free depends on the complexity of the topic and the essay structure. Generally, a 100-word essay should be about 3 to 5 paragraphs and take up about half a page. This length may vary depending on the font, font size, and other formatting factors.The definition of a second is based on the ground state hyperfine transition frequency of the caesium-133 atom, which is the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom in a vacuum. This frequency is 9,192,631,770 Hz, and is known as the caesium frequency. One second is defined as the time it takes for the caesium atom to undergo 9,192,631,770 radiation periods, which is equivalent to 9,192,631,770 cycles of the photon's frequency.
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Suppose two systems, each composed of three particles represented by circles, have 30 J of total energy.
System A 10 J ooo −−−−−−
System B 12 J o −−−−
10 J o −−−−
8 J o −−−−
How many energetically equivalent ways can you distribute the particles in system A?
How many energetically equivalent ways can you distribute the particles in system B?
Entropy, S, is a thermodynamic function that rises with the degree of freedom (number of energetically equivalent ways to arrange the components).
Entropy: What Does It Mean?Entropy is a scientific concept and observable physical feature that is commonly related to a state of chaos, unpredictability, or uncertainty. Since labor is created by organized molecular motion, entropy measures the molecular disorder or unpredictable nature of a system.
How many distributions of the particles in system B are there that are energetically equivalent?In system B, there are three distinct energy levels. To maintain the overall energy of 30 J, each particle can only occupy one energy level. By rearranging the particles among the layers, one may count how many equivalent ways there are.
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A) You begin preparation of the calibration curve to measure absorbance vs concentration of FeSCN2+. To do so, you add 4.128 mL of 0.150 M Fe(NO3)3 to a cuvette and then directly add 210.454 µL of 0.001 M KSCN. What is the resulting concentration of FeSCN2+, assuming complete conversion of SCN- to FeSCN2+? Provide your response to four digits after the decimal; be careful with your exponent, it must complete this expression: __________ x 10-3 M.
B) If the initial amount of Fe(NO3)3 transferred to the cuvette is 0.046 mol, and the absorbance measurements indicate that 0.024 mol of FeSCN2+ are present at equilibrium, what must be [Fe3+] at equilibrium? The total volume of solution in the cuvette is 2.451 mL. Provide your response to two digits after the decimal.
Concentration of [tex]\left[\mathrm{Fe}^{3+}\right]$[/tex]at equilibrium is 7.394 M.
What is volume?The volume of a substance is a measurement of how much space it occupies. Matter is a term used to describe a physical substance that has mass and occupies space.Cubic metres are the accepted unit of volume in physical sciences like chemistry (m3). From this, other units like the litre (L) and millilitre (mL) are generated (mL). The area occupied within an object's three-dimensional bounds is referred to as its volume. The object's capacity is another name for it.Volume is the amount of space that an object takes up, whereas capacity is the characteristic of a container, especially how much liquid it can hold.Therefore,
Moles of ferric nitrate [tex]$=0.026 \mathrm{~mol}$[/tex]
Concentration of ferric nitrate [tex]=\frac{0.026 \mathrm{~mol}}{2.164 \times 10^{-3} \mathrm{~L}}=12.015 \mathrm{M}$[/tex]
12.015M of ferric nitrate solution will contain: If 1 mole of ferric nitrate yields 1 mole of ferric ions, then
Moles of [tex]$F e(S C N)]^{2+}$[/tex] at equilibrium = 0.01 mol
Concentration of [tex]$F e(S C N)]^{2+}$[/tex] at equilibrium =
[tex]$[\mathrm{Fe}(S C N)]^{2+}=\frac{0.01 \mathrm{~mol}}{2.164 \times 10^{-3} \mathrm{~L}}=4.621 \mathrm{M}$[/tex]
[tex]$\mathrm{Fe}^{3+}+\mathrm{SCN}^{-} \rightleftharpoons[\mathrm{Fe}(\mathrm{SCN})]^{2+}$[/tex]
Initially
12.015 0
At equilibrium
(12.015 - 4.621 )M 4.621M
Concentration of [tex]$\left[F e^{3+}\right]$[/tex] at equilibrium
= (12.015 - 4.621 )M = 7.394 M
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Arrange calcium, rubidium, sulfur, and arsenic in order of decreasing electronegativity.
S > As > Rb > Ca
As > S > Ca > Rb
As > S > Rb > Ca
S> As > Ca> Rb
None of these orders is correct.
Difference In order to reduce our rough electro-negative, we must add arsenic, sulfur, rubidium, and calcium. If we follow the predictable sequence, all the participants are here in the 16th group, followed by arsenic in the 15th group, calcium in the second group, and rubidium in the first group.
And we know that electron density rises from the left to the right based on periodic trends. Negativity in elections rises from left to right. found in the periodic table. Accordingly, the elements on the left are more lateral positive and less slightly negative, while the elements on the right are more slightly negative and less electorally positive. Sulfur is therefore at the utmost level right if we walk through them. sulfur follows.
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(D.) S> As > Ca> Rb, If calcium, rubidium, sulphur, and arsenic are arranged in decreasing sequence of electronegativity, S> As > Ca> Rb results.
The capacity of an atom to draw a pair of bound electrons determines its electronegativity. The Pauling scale is the most often applied. Cesium and francium have values that are less electronegative than fluorine, which is given a value of 4.0. From top to bottom, the electronegativity decreases, and from left to right, it gradually increases. Fluorine is consequently the element with the highest electronegative potential, whilst francium is one of the lowest. An atom's or functional group's propensity to draw electrons to itself is known as electronegativity, which is a chemical characteristic.
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Which two particle types illustrate the axiom “opposites attract?”
A.
electrons and neutrons
B.
neutrons and protons
C.
quarks and neutrons
D.
electrons and protons
D. electrons and protons
Explanation:Each of the subatomic particles that make up the atom has a different charge.
Subatomic Particles
Firstly, remember that subatomic means smaller than the atom. There are 3 subatomic particles that make up the atom: the neutron, proton, and electron. The neutron has no charge, also known as a neutral charge. The proton is positively charged. The electron is negatively charged. The proton and neutron are located in the nucleus, and the electrons orbit the nucleus.
Attractions
The reason that electrons orbit the nucleus is due to the opposite charges of the proton and electron. The positive charge of the protons attracts the negative charge of the electron toward the nucleus. As the electrons move quickly around the nucleus, the attractive forces keep the electrons near the atom. The opposite charges and subsequent attraction of protons and electrons are the cause of many chemical reactions.
A. river
C. alpine
This glacier
originated high in
the mountains.
What type of
glacier is it?
B. island
D. sailing
Alpine glaciers create or widen valleys by ejecting dirt and other objects in their path. Aside from Australia, they are spread across every landmass in high piles.
What kind of landmass is that?
An landmass is a group of land that is typically divided by an ocean, causeway, or canal. America and Latin America, which are divided by a canal, are two examples of landmasses. It is possible to extend this brief article about a location or feature.
What is the world's largest landmass?
The largest continent, Asia, runs from the western Pacific Ocean to the eastern Mediterranean Sea. Asia is home to more than 40 nations. China, India, and Indonesia are a few of the most populous nations on the planet.
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Which element is oxidized in the reaction below>I- + MnO4- + H+ -> I2 + MnO2 + H2O
a) I
b) H
c) O
d) Mn
I is the element which is oxidized in the given reaction. Therefore, the correct option is option A.
An atom, ion, or molecule undergoes oxidation when one of its electrons is lost or its oxidation status is raised. It can be identified by the oxidation number of an element rising, the removal of hydrogen, the loss of electrons, or the addition of oxygen.
[tex]\rm I^- + MnO_4^- + H^+ \rightarrow I_2 + MnO_2 + H_2O[/tex]
Oxidation state on reactant side are:
The oxidation state of the iodide ion ([tex]\rm I^-[/tex]) is 1.
The oxidation state of the permanganate ion ([tex]\rm MnO_4^-[/tex]) is +7.
The oxidation state of the hydrogen ion ([tex]\rm H^+[/tex]) is 1.
Oxidation state on product side are:
Iodine ([tex]\rm I_2[/tex]) has an elemental state with oxidation state 0.
With an oxidation state of +4, manganese dioxide ([tex]\rm MnO_2[/tex]) is a metal.
The oxidation state of water ([tex]\rm H_2O[/tex]) is -2 for oxygen and +1 for hydrogen.
Iodine has undergone oxidation because its oxidation state went from -1 to 0.
Therefore, the correct option is option A.
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what is the density of 500 G of juice that is 225 mL in volume
Explanation:
Density=Mass/Volume
Mass=500gm
Volume=225ml
Density of juice=500/225=2.22gm/ml (approx)
Brainly placed a thermometer in a jar of hot water. The red level immediately went up. Which is the best answer? 1.) Hot water pushed the red liquid up and out of its way as water entered the thermometer. 2.) mass of the red liquid increased so it takes up more space which makes it go the thermometer. Density of the red liquid does not change 3.) molecules of the red liquid gain. Thermal energy from the hot water causes them to expand up the thermometer as they become less dense.
The reason the red level immediately went up when the thermometer was placed in the jar of hot water was 3.) molecules of the red liquid gain. Thermal energy from the hot water causes them to expand up the thermometer as they become less dense.
How does a thermometer work ?A glass tube filled with mercury that expands or contracts as the temperature changes serves as the medium through which a thermometer measures temperature. The tube and bulb are so small that the mercury can reach the temperature of what they are measuring extremely quickly.
The mercury molecules in the red liquid, which receive thermal energy from the hot water, expand up the thermometer as their density decreases.
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What is pseudoscience? How is it different from non-science?
Pseudoscience is described as consisting of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method.
The main difference between Pseudoscience and non- science is that pseudo-science is set up to look for evidence that supports its claims, while non-science do not look for evidence that might prove it false.
What is Pseudoscience?Pseudoscience is described as a proposition, a finding or a system of explanation that is presented as science but that lacks the rigor essential to the scientific knowledge.
A non-science on the other hand is an area of study that is not scientific, especially one that is not a natural science or a social science that is an object of scientific inquiry.
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Can a voltaic cell in which both half-reactions are the same generate a current? Yes, as long as any two half-cells are connected by a salt bridge, a current will flow. Yes, if there is a difference in concentration of the ion between the two half-reactions No, if there is no difference in standard cell potential between the half-reactions, there can be no driving force for electrons to flow Yes, electrons always flow toward the electrode with the more positive standard reduction potential
Yes. It is possible. This is known as a concentration cell and each half ion cell should have a different concentration. Correct option: b
What is a gray cell?A galvanic (or voltaic) cell, called a concentration cell, consists of two half-cells with the same electrodes, but with different densities. Concentration cells attempt to achieve equilibrium by transferring electrons from cells of lower concentration to cells of higher concentration. An electrolytic cell with two half-cells with the same electrodes but different concentrations is called a concentrated cell. A concentration cell concentrates a more diluted solution while diluting a more concentrated solution. As the cell approaches equilibrium, a voltage develops.
Yes, if there is a difference in concentration of ions between the two half-reactions.
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The complete question is as follows:
Can a voltaic cell in which both half-reactions are the same generate a current?
Yes, as long as any two half-cells are connected by a salt bridge, a current will flow.
Yes, if there is a difference in concentration of the ion between the two half-reactions.
No, if there is no difference in standard cell potential between the half-reactions, there can be no driving force for electrons to flow.
Yes, electrons always flow toward the electrode with the more positive standard reduction potential.
How would you convert the following compounds into butanoic acid using reagents from the table? Use letters from the table to list reagents in the order used (first at the left). Example: ab Reagents a. CrO_3/H_3O^+ b. KMnO^4/H_3O^+ c. 1.LiAIH_4 2. H_3O^+ d. H_3O^+, heat e. KOtBu f. NaOH g. conc. HCI h. Mg/dry ether i. 1. BH_3/THF 2. H_2O_2/NaOH j. 1.CO_2 2. H_3O^+ k. NaCN l. 1. Li 2. Cul
1-Bromopropane________
1-Bromobutane___________
a. H_3O^+/KBr b. H_3O^+/CrO_3 c. LiAIH_4/H_3O^+ d. H_3O^+/heat e. KOtBu f. NaOH g. Conc. HCl h. Mg/dry ether i. BH_3/THF/H_2O_2/NaOH j. CO_2/H_3O^+ k. NaCN l. Li/Cu
What is bromopropane ?Bromopropane is a type of organic compound, composed of three carbon atoms and two bromine atoms. It is a colorless and flammable gas, with a sweet and pungent odor. It is used as a solvent in many industrial applications, such as in the manufacture of paints and coatings, as well as in some chemical processes. Bromopropane is also used in the production of pharmaceuticals and other compounds. It can be highly toxic if inhaled, and therefore should be handled with caution.
a. H_3O^+ l. 1. Li 2. Cu
b. KMnO_4/H_3O^+ j. 1.CO_2 2. H_3O^+
c. H_3O^+, Heat f. NaOH
d. KOtBu k. NaCN
e. Mg/Dry Ether i. 1. BH_3/THF 2. H_2O_2/NaOH
g. Conc. HCI h. 1.LiAIH_4 2. H_3O^+
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Categorize the pairs of variables given below as directly or inversely proportional for an ideal gas.
For each pair, assume all other variables are held constant.
(i) density & molar mass
(ii) pressure & absolute temperature
(iii) volume & absolute temperature
(iv) volume & pressure
(v) volume & number of moles
Option (i), (ii), (iii) and ( v) are directly proportional. Option (iv) id inversely proportional. This explained in the charle's law.
The Density of a gas is directly proportional to the molar mass of a gas. Density depends directly on the mass of the gas. The pressure of a given amount of gas is directly proportional to its absolute temperature. According to the Charle's law, the volume of a given gas sample is directly proportional to its absolute temperature at constant pressure. According to the charle's law, the volume of a given gas sample is directly proportional to its absolute temperature at constant pressure. The volume of a gas is directly proportional to the number of moles of gas at constant temperature and pressure. The pressure and volume are inversely proportional.
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The density and molar mass , Pressure and absolute temperature , Volume and absolute temperature , and , Volume and number of moles are directly proportional. Whereas Volume and Pressure is inversely proportional for an ideal gas.
The experimental gas law known as Charles' law, commonly referred to as the law of volumes, illustrates how gases tend to expand when heated. The Kelvin temperature and the volume will be directly proportional when the pressure on a sample of a dry gas is kept constant. According to this law, a gas expands as its temperature rises, while a drop in temperature causes a reduction in volume. For contrasting the same chemical under two sets of contrasting circumstances. The relationship between a gas's density and molar mass is straightforward. The mass of the gas directly affects the density. The relationship between a gas's absolute temperature and pressure is straightforward. The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure, according Charle's law. The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure, per Charles' law. At constant temperature and pressure, the number of moles of a gas is precisely proportional to its volume. Volume and pressure have an inverse relationship.
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What is [H1+] in a solution prepared by mixing the following solutions
12.5 mL of 2.30 M HCl
27.8 mL of 3.60 M HCl
18.2 mL of 6.90 M HCl
15.0 mL of water
Protium, an isotope of hydrogen, contains the hydrogen atom (H1). An interstellar cloud called the H I region.
How many protons are in H1?Community of British NVC H1, an area of health. An isotope of hydrogen, the hydrogen atom (H1) protium, is present. In the interstellar medium, a cloud called the H I zone. CTA code H01 Anatomical Therapeutic Chemical Classification System subclass: Pituitary and hypothalamic hormones and analogues.
Water and organic compounds are two examples of molecules that contain the majority of the hydrogen that exists on Earth. One proton, one electron, and no neutrons are present in each atom of the most prevalent isotope of hydrogen (symbol 1H).
It is officially referred to as protium because this isotope's nucleus only contains one proton. Hydrogen-1 is regarded as a stable isotope because the proton's decay has never been detected.
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How many moles of ammonia gas (NH3) would occupy a 0.43L container at STP
Answer:
0.0192 moles
Explanation:
One mole of any gas occupies 22.414 L at S.T.P
setting up mole and volume ratio;
mole : volume
1 : 22.414
X : 0.43
X = 0.43/22.414
X = 0.0192 moles
CO2 + H2O + heat CO2 + H2O, which way will the equilibrium shift?
Answer:
gg
Explanation:
your skrewed
Which of the following is an interaction in which one organism will be consumed? Parasitism, Competition, Predation, Commensalism
Answer:
predation
Explanation:
The types of interaction in which one organism will be consumed are predation and competition.
PREDATION: When one animal hunts down another animal for food, it is called predation. The animal that is hunting is called the predator and the one being hunted is called the prey. Certain patterns of predation give us a particular food chain. For example, an insect is eaten by a frog, a frog is eaten by a snake, and a snake is then eaten by a vulture.
COMPETITION: In this type of interaction, a group of animals or individual animals compete for food or other resources. Depending on the resource being competed for, it is of various types.
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AgNO 3 + NaCl → AgCl + NaNO 3
What are the ions?
click and drag on elements in order correctly order the steps for solving a problem involving the ideal gas law. start with the first step at the top of the list.
1) identify known and unknown variables
2)rearrange the ideal gas law to isolate the unknown variable and perform any necessary unit conversions
3)solve for the unknown variable
Avogadro's principle, which applies the standard of the number of atoms in a mole of gas, enhances this formula. (P1*V1)/T1 = (P2*V2)/T2
PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin, is the equation for the ideal gas law.
calculating for V
PV = nRT
V = (nRT)/P
Needed to divide both sides by P in order to transfer V from the left to the right side of the equation:
PV = nRT
nRT/P = PV/V
This is the right equation: P = (nRT)/P.
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Which model most accurately represents the current view of the structure of the atom? Planetary Model Probability Model Planetary model
Probability model
With regard to the current understanding of atom structure, that planet best captures the model.
Describe an atom.A chemical element's atom is a particular type of particle of substance. A positively charged electron or many negatively charged electrons encircle the central nucleus of an atom. Protons and neutrons, two relatively hefty particles that make up the positively charged nucleus, may be present.
What is the cause of Atom's shutdown?We have chosen to abandon Atom in order to enhance our dedication to bringing quick and dependable application development to the cloud using Microsoft's Visual Code and GitHub Codespaces, even though the goal of expanding the software maker community still exists.
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In a highly basic solution, pH = 13, the dominant form of glycine is: NH2—CH3+—COO-.
The predominant form of glycine in a strongly basic solution with a pH of 13 is NH2—CH3+—COO-. For amino acids with neutral R groups, the population of amino acids in solution will have a net positive charge at any pH below the amino acid's pI.
Are there D and L forms of glycine?A flexible addition that prevents protein aggregation during refolding, heat treatment, and crystallization is glycine amide (GlyAd), an usually amidated amino acid.
Since it is the only amino acid without a chiral carbon atom, glycine is the simplest and smallest and has a hydrogen atom as a side chain. As a result, it does not produce stereoisomers and does not have the L or D configurations found in other amino acids.
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Borane (BH3) is very unstable and quite reactive.
1- explain the source of instability.
The central boron atom lacks an ........of electrons, and it is therefore very unstable and reactive.
BH3 is an unstable compound because: Bh3 molecule is an electron deficient molecule in nature since the 6 electrons are around the 'B' atom.
Why is borane very unstable?Because of its Lewis acidic nature, borane is very reactive. This indicates that it is easily able to receive electrons from other molecules, making it extremely vulnerable to reactions.
The extreme instability of the chemical borane further adds to its reactivity. It's not unstable, BH3. As you may recall, sp3 forms four bonds and is generally more energetically stable than sp2, which has a planar shape.
Therefore, like in NH3, a single pair with roughly the proper amount of energy can activate the fourth bond. To learn more about boranes and its qualities, read the article. Because it has an open orbital, borane is a Lewis acid. Borane is a chemical that is highly reactive, rapidly ignites in the air, and reacts with water.
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Write the chemical symbols for three different atomic cations that all have 23 protons.
The chemical symbols for three different atomic cations that all have 23 protons are V²⁺ ; V³⁺ ; V⁴⁺ ; V⁵⁺.
What is atomic cation?An ion with positive charge is known as a cation, and this means that it has more protons (positively charged particles) than electrons (negatively-charged particles). When an atom loses one or more electrons, cations are created because the negatively charged electron or electrons are lost, leaving a positive charge on the atom overall.
Keep in mind that cations are positive ions; they are positively charged as a result of having lost one or more electrons and consequently possessing a higher number of protons than electrons. Anions are negative ions, having more electrons than protons due to the fact that they have gained one or more electrons.
The element of the periodic table that has 23 protons is vanadium.
It can form the following cations:
V²⁺ ; V³⁺ ; V⁴⁺ ; V⁵⁺
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The pressure of hydrogen sulfide gas in a container is 35,650Pa. What is this pressure in torr (1 atm = 101,325 Pa = 760torr)?
A. 46.91 torr
B. 267.4 torr
C. 351.8 torr
D. 3612torr
E. 27,090 torr
A container of hydrogen sulphide gas has a pressure of 35,650Pa. This pressure in torr is 267.4 torr.
Given the pressure of hydrogen sulfide gas is (P) = 35,650Pa
We know that 1 atm = 101,325 Pa = 760torr
Then let 35,650Pa is equal to y torr.
y x 101,325 = 760 x 35,650
y = 267.4torr
Pressure is defined as the force perpendicular to an object's surface applied per unit area over which that force is dispersed. The force of one newton applied perpendicularly to a surface area of one square metre constitutes the fundamental unit of pressure, the pascal.
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Which of the following has an effect on the magnitude of the equilibrium constant?
a. increasing the pressure, in a gas-phase reaction
b. adding more of a reactant
c. change in temperature
d. adding a catalyst
e. removing products as they are formed
The following has an effect on the magnitude of the equilibrium constant: c. change in temperature.
What has effect on the magnitude of equilibrium constant?The only thing that changes an equilibrium constant is the change of temperature. Position of equilibrium is changed if you change the concentration of something present in mixture.
Increasing the temperature decreases value of the equilibrium constant. When the forward reaction is endothermic, increasing the temperature increases the value of equilibrium constant. And position of the equilibrium also changes if you change the temperature.
Catalyst does not affect the chemical equilibrium and it only speeds up a reaction.
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write the equation for the reaction associated with the kb2 of carbonate, co32–.
The equation for the reaction associated with the kb2 of carbonate, co32– is:
CO32– + H2O ⇌ HCO3– + OH–
A chemical reaction is a process that involves the reorganization of the molecules or ions of one or more substances to form different substances. Chemical reactions can involve the breaking down of substances into smaller molecules or ions, the joining of molecules and ions to form new substances, or the exchange of atoms between molecules. Examples of chemical reactions include combustion, rusting, photosynthesis, and fermentation.
This reaction is a double-displacement reaction, in which the cations and anions of the two reactants switch places. The carbonate ion (CO32–) reacts with water to form the bicarbonate ion (HCO3–) and the hydroxide ion (OH–).
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