PLS HELPPP ITS DUE VRY SOON

PLS HELPPP ITS DUE VRY SOON

Answers

Answer 1

In a molecule or covalent bonding, elements having Octet electrons to obtain the stability with eight electrons.

One element that does not follow the octet rule is hydrogen. For stability only require stable electrons.

A molecule can present covalent bond but can be chemical.

What is a covalent bond?

Covalent bonding is a type of chemical bonding that occurs when two or more atoms share electrons in order to form a strong bond between them. This type of bond is formed when atoms share electrons in a way that gives each atom a full outer shell of electrons, known as the octet rule. This means that all atoms in the bond must have a total of eight electrons in their outermost shell. The atoms involved in a covalent bond form a molecule, which is held together by the shared electrons.

The octet rule is a guideline that states that atoms will bond in a way that allows them to have a full outer shell of electrons. This means that they must share electrons in order to reach a total of eight electrons in their outermost shell. The sharing of electrons creates a strong bond between the atoms that form a molecule. The sharing of electrons also results in the creation of a covalent bond.

However, not all elements follow the octet rule. For example, hydrogen only requires two electrons to reach a stable state, so it does not need to share electrons in order to reach the octet rule. Therefore, a hydrogen molecule will not have a covalent bond.

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Related Questions

Give the formula of the conjugate base of HS^-

Answers

The conjugate base of the specie HS^- is S^-

What is the conjugate base?

We know that form the Bronsted Lowry perspective of the acid and the base, the acid is the substance that can be able to give out a proton while the base is the kind of substance that can be able to accept a proton.

We can see here that the conjugate base is the specie that can be obtained by the loss of a proton from the HS^- as such we would have it as S^-.

Hence, we can see that the base that is the conjugate base in this sense is S^-.

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I'm struggling with this last question on my final for chemistry

Answers

Answer:

I'm pretty sure it's B but I'm not sure

Explanation:

Given the following chemical reaction, choose the correct set of coefficients below. The coefficients in the answers are in the same order as the chemicals written
below.
C₁2H₂2011+0₂ CO₂ +4₂0
For example, if you choose the set 3, 5, 2, 1 you are stating that you have
3C₁th2₂₂011+5_0₂_2_00₂+_1_14₂0

Answers

Answer:

The correct set of coefficients for the given chemical reaction is 2, 4, 1, 2, which means that you have 2C₁2H₂2011+40₂200₂+114₂0.

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The speed of Train A is 88 km/hr, and the speed of Train B is 96 km/hr. Based on this information, which of the following statements is true?

A.Train A has more kinetic energy than Train B.
B.Train B has more kinetic energy than Train A.
C.Neither train has any kinetic energy.
D.The trains have the same kinetic energy.

Answers

The speed of Train A is 88 km/hr, and the speed of Train B is 96 km/hr. The trains have the same kinetic energy. Therefore, option D is correct.

What is kinetic energy ?

Kinetic energy is the energy of motion, which can be seen as an object or subatomic particle moving. Kinetic energy exists in every moving object and particle.

The ability of kinetic energy to do work is perhaps its most important property. Work is defined as force acting in the direction of motion on an object. Work and energy are so inextricably linked that they can be used interchangeably.

The speed of Train A is 88 km/hr, and the speed of Train B is 96 km/hr. The trains have the same kinetic energy because their masses are identical.

Thus, option D is correct.

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Please answer my question.

Answers

The cell potential is  - 0.00072V

What is the Ecell?

The Nernst equation is an electrochemical equation that describes the voltage (electromotive force) produced by a galvanic cell, as a function of the cell potential relative to its standard state, temperature and the activities of the reactants and products

If we apply the Nernst equation to the problem that we have here and then we try to obtain the cell potential of the cell as we can see in the image that have been shown in the attachment then we would have that;

Ecell =Eocell - 0.0592/2 logQ

Then;

Ecell = 0 - 0.0592/2 log(0.811/0.858)

Ecell =  - 0.00072V

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Balance ClO2(aq)+H2O(l)→HClO2(aq)+HClO3(aq)

Answers

Answer:

2ClO2 + H2O → HClO2 + HClO3

Explanation:

pls tell me if wrong have a good day/night<3

The number of chlorine atom on left is 1 while on right side is 2. The balanced equation is 2ClO[tex]_2[/tex]+ H[tex]_2[/tex]O → HClO[tex]_2[/tex] + HClO[tex]_3[/tex]

An equation per a chemical reaction is said to be balanced if both the reactants or the products have the same number of atoms and total charge for each component of the reaction. In other words, each side of the reaction have an equal balance of mass and charge. The components and outcomes of a chemical reaction are listed in an imbalanced chemical equation, but the amounts necessary to meet the conservation of mass are not specified.

The skeletal equation is  ClO[tex]_2[/tex]+ H[tex]_2[/tex]O → HClO[tex]_2[/tex] + HClO[tex]_3[/tex]

The number of chlorine atom on left is 1 while on right side is 2. Multiply the reactant by 2. The balanced equation is 2ClO[tex]_2[/tex]+ H[tex]_2[/tex]O → HClO[tex]_2[/tex] + HClO[tex]_3[/tex]

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I need help as soon as possible please!!

Answers

All the given combinations results in ionic compounds by electron donating from metals. The compound formed between sodium and chlorine is NaCl and that of magnesium and oxygen is MgO.

What are ionic compounds ?

Ionic compounds are formed between metals and non-metals. Metals are electron rich and will easily loss electrons to electron deficient nonmetals.

Sodium chloride or NaCl is formed by donating one electron from the sodium metal to the chlorine atom. Similarly magnesium donates its two valence electrons to oxygen forming MgO.

The valency of both Al and N is 3. Al donates its 3 electron to N and forms aluminum nitride AlN.

Similarly, potassium and sulphur forms potassium sulphide K₂S, where, each potassium metal donates one electron to sulphur atom.

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Which of the following explains how the system is changing when water boils in an isolated system with a movable piston, such as the one pictured?piston moves upward, increasing the volume

Answers

Piston moves upward than volume will increases when water boils in an isolated system with a movable piston.

First law of thermodynamics: The first law of thermodynamics, also termed as the law of conservation of energy, states that energy can neither be created nor be destroyed, but it will be changed from one form into another.

Mathematically, ΔQ = ΔU + W

This first law of thermodynamics will be used in movable piston.

ΔQ is the heat given or the heat lost

ΔU change in internal energy

W will be the work done

Isolated system: A system which cannot exchange matter or energy with the surroundings, is called as an isolated system.

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--The given question is incorrect, the correct question is

"How the system is changing when water boils in an isolated system with a movable piston?"--

A macroscopic sample of an element contains an incredibly large number of atoms, all of which have identical _______. Atoms of one element differ in properties from atoms of all other elements.

Answers

A macroscopic sample of an element contains an incredibly large number of atoms, all of which have identical number of protons .

What is an element?

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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The strongest intermolecular interactions between hydrogen sulfide (H2S) molecules arise from:
A. dipole-dipole forces
B. London dispersion forces
C. hydrogen bonding
D. ion-dipole interactions
E. disulfide linkages

Answers

The strongest intermolecular interactions between hydrogen sulfide (H2S) molecules arise from dipole-dipole forces.

Sodium sulphide:

It is a peculiar chemical substance that emits a deadly gas and is highly combustible, corrosive, and toxic. At low concentrations, it smells like rotten eggs. It is created when organic material undergoes microbial decomposition in the absence of oxygen. It can be found in natural gas, crude oil, sewage, and other places.

Molecule-to-molecule force:

The electrostatic force of attraction between the molecules is what causes the intermolecular forces to exist. Ionic forces (ion to ion forces and ion to an induced dipole forces), dipole-dipole forces (hydrogen bonding, permanent dipole-permanent dipole, and permanent dipole-induced dipole forces), and Van der Waals forces are three different forms of intermolecular forces (induced dipole to induced dipole).

Strongest intermolecular hydrogen sulphide force:

The London dispersion force and the London scattering force are two of the weakest forces, and it is known to emphasise the dipole-dipole interaction. Due to the substantial difference in electronegativity between hydrogen and sulphur, their bond is polar. As a result, dipole-dipole interactions are what happen between molecules.

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lactic acid produced in skeletal muscles travels to the liver where converts it to pyruvic acid.

Answers

Muscle-generated L-lactic acid travels through the bloodstream to the liver and from the cytosol to the mitochondria. In the matrix, L-lactate metabolism leads to pyruvate (PYR) via m-L-LDH and then to oxaloacetate (OAA) and malate (MAL) produced by mitochondria via three putative .

Lactate is oxidized to pyruvate by lactate dehydrogenase. Pyruvate is transported to mitochondria and converted to oxaloacetate by fermentation (anaerobic breakdown of glucose) by pyruvate carboxylase (produced in liver, muscle cells, red blood cells, etc.). It is formed during strenuous exercise when the body breaks down glucose without oxygen. Lactic acid is converted to pyruvate by the enzyme lactate dehydrogenase.

Colycycle and alanine cycle.

In the Coli cycle, glucose is metabolized to pyruvate in muscle and then to lactate, which is released into the blood and transported to the liver where it is converted to pyruvate and used for gluconeogenesis, resulting in The resulting glucose is released back to the muscle.

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A student determined the average concentration of total reducible iodine in the aqueous phase from their 'best two' determinations in Part 1 to be 0.0178 M. They also determined the average concentration of 12 in the CH₂Cl₂ phase from their 'best two' determinations in Part 2 to be 0.0198 M. Determine what the concentration of I2 in water would be based on this student's previous work. Report your final answer, in mol/L, to 6 decimal places and only include the numerical value (no units). Do not
use scientific notation for this question.​

Answers

The amount of I2 in water will be 0.001202 mol/L according to the student's work.

In chemical, what is concentration?

The amount of a particular chemical solute in a specific concentration of the solution seems to be how strong it is. Molarity, or the number of molecules of material in one liter of solution, is a common unit of measurement for concentrations.

How does a person concentrate?

The capacity to focus is being able to control your attention. Control of attention is what it means. The capacity to concentrate without getting sidetracked on one thing, object, or concept. Focusing one's attention while ignoring extraneous thoughts is known as this.

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The following initial rate data are for the reduction of nitric oxide with hydrogen: 2 NO + 2 H2N2 + 2 H2O Experiment [NO]o, M [H2]o, M Initial Rate, M s-1 1 0.167 0.210 8.38×10-3 2 0.334 0.210 3.35×10-2 3 0.167 0.420 1.68×10-2 4 0.334 0.420 6.70×10-2 Complete the rate law for this reaction in the box below. Use the form k[A]m[B]n , where '1' is understood for m or n and concentrations taken to the zero power do not appear. Don't enter 1 for m or n. Rate = From these data, the rate constant is M-2s-1.

Answers

The complete rate law should be like: Rate = k[NO][H2]^2

Rate = k[NO]^x[H2]^y, where x and y are the exponents for the concentration of nitric oxide (NO) and hydrogen (H2) respectively.

The rate law can be determined by performing experiments with different initial concentrations of NO and H2 and observing how the initial rate changes.

From the data provided,

It can be seen that increasing the concentration of NO by a factor of 2 results in an increase in the initial rate by a factor of 2^(x).

Similarly, increasing the concentration of H2 by a factor of 2 results in an increase in the initial rate by a factor of 2^(y).

Based on this information, x = 1 and y = 2 can be determined, giving us the rate law:

Rate = k[NO][H2]^2

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Determine the number of neutrons in each of the following atoms given the mass number and atomic number. 1. An atom of oxygen with a mass number of 17 and an atomic number of 8 has a total of 9 neutrons. 2. An atom of aluminum with a mass number of 24 and an atomic number of 13 has a total of 11 neutrons. 3. An atom of phosphorous with a mass number of 31 and an atomic number of 15 has a total of 16 neutrons. 4. An atom of potassium with a mass number of 39 and an atomic number of 19 has a total of 20 neutrons. 5. An atom of fluorine with a mass number of 19 and an atomic number of 9 has a total of 10 neutrons.

Answers

An atom of oxygen with a mass number of 17 and an atomic number of 8 has a total of 9 neutrons (17 - 8 = 9).An atom of aluminum with a mass number of 24 and an atomic number of 13 has a total of 11 neutrons (24 - 13 = 11).An atom of phosphorous with a mass number of 31 and an atomic number of 15 has a total of 16 neutrons (31 - 15 = 16).An atom of potassium with a mass number of 39 and an atomic number of 19 has a total of 20 neutrons (39 - 19 = 20).An atom of fluorine with a mass number of 19 and an atomic number of 9 has a total of 10 neutrons (19 - 9 = 10).Number of Neutrons in the Atom:

The number of neutrons in an atom varies and can be determined by the atomic number of the element. The atomic number is the number of protons in the nucleus of an atom and defines the element. The number of neutrons can be calculated by subtracting the atomic number from the mass number, which is the total number of protons and neutrons in the nucleus.

For example, the most common isotope of carbon has 6 protons and 6 neutrons, so its atomic number is 6 and its mass number is 12. The number of neutrons in this isotope of carbon is 12 - 6 = 6.

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1 cup=8 oz and 8 oz=1 cup
300.mL=1 can and 1 can=300.mL
You just created the equality 1 fluid oz = 29.7 mL.
Use this equality to determine how many ounces of water will be measured using the measuring cup introduced before Part A when making the cake. Keep in mind that the level of precision for the measuring cup is to the half-ounce as you round your answer.
Express your answer numerically in ounces to two significant figures.

Answers

Rounding to the nearest half-ounce, the answer is 8 oz to two significant figures.

What is the measure?

Generally, We are given:

1 cup = 8 oz

1 fluid oz = 29.7 mL

So, 1 cup = 8 fluid oz

= 8 * 29.7 mL

= 237.6 mL

To find the number of ounces of water measured using the measuring cup, we divide the volume in mL by the conversion factor from mL to oz:

237.6 mL / 29.7 mL/oz = 8 oz

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An atom is to a mole as


A.
A dozen is to an egg


B.
An egg is to a dozen


C.
A goose is to a gaggle


D.
Both B and C

Answers

According to a mole, an atom is A particle that matter that specifically specifies a chemical element is like an egg to a dozen and like a goose to a gaggle.

The correct answer is D

Name an atom.

Atoms are a particular kind of material particle that make up a chemical element. The core nucleus of an atom is surrounded by electrons that are either positively charged or negatively charged in large numbers. The positive charges nucleus, which is composed of two comparatively large particles called protons and neutrons, may exist.

What is an atom, and how are they used?

The positively and negatively charged protons and neutrons that make up the majority of atoms are encircled by a cloud of negatively charged electrons. At its most basic level, an atom would be any particle of stuff.

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carbohydrate
A simple sugar is composed of equal parts carbon and water, which gave rise to the general name of any sugar as a...

Answers

Carbohydrates are organic molecules composed of carbon, hydrogen, and oxygen atoms.

They are a class of biomolecules which are essential to life on Earth, as they are the primary source of energy for cellular processes.

Carbohydrates can be divided into two categories:

Simple sugars, such as glucose, fructose, and galactose, are composed of one or two molecules and are the simplest form of carbohydrates. Complex carbohydrates, such as glycogen, starch, and cellulose, are composed of many molecules joined together and are more complex in structure.

These carbohydrates can provide energy, structure, and protection to cells, and they play an important role in many biological processes.

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sulfur-tethered methylene bridge-junction (stmbj) thiol methyl anchors: synthesis, characterization, and application in organic synthesis

Answers

Sulfur-tethered methylene bridge-junction (STMBJ) thiol methyl anchors are a type of chemical compound that is synthesized by attaching a methylene bridge to a sulfur atom through a thiol group.

These compounds are characterized by the presence of a sulfur atom, which acts as a tether, and a methylene bridge, which serves as a junction between the sulfur atom and the thiol group. They are used in organic synthesis as anchoring groups for various reactions and for the preparation of compounds with specific properties.

The synthesis of STMBJ thiol methyl anchors involves the use of chemical reactions, such as the reaction between a thiol and a carbonyl compound.

The characterization of these compounds is typically carried out using techniques such as infrared spectroscopy, nuclear magnetic resonance spectroscopy, and mass spectrometry.

The application of STMBJ thiol methyl anchors in organic synthesis is in the preparation of compounds with specific properties and in the design of new chemical reactions.

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Can someone explain to me how to find amounts of atoms, how many moles in grams, amount of molecules, etc. I just need a better explanation

Answers

Number of

atom

can be calculated using stoichiometry.

Moles

can be calculated by dividing mass and molar mass.

What is atom?

The smallest unit of

matter

that can be divided without producing electrically charged particles is the atom. It is also the smallest piece of matter with chemical element-like characteristics. As a result, the

atom

serves as the fundamental unit of chemistry.

Number of

atom

can be calculated using stoichiometry. Moles can be calculated by dividing mass and molar mass. Number of

molecules

can be divided by multiplying moles and Avogadro number.

Therefore, number of

atom

can be calculated using

stoichiometry

.

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What is the empirical formula of a compound that is 40.0% sulfur and 60.0% oxygen by weight?

Assume 100 g sample. g-->mol for each element, divide by smallest # of moles

S = 32 g/mol

O = 16 g/mol

Answers

Empirical formula is SO3 with one sulfur atom and three oxygen atoms.

What is empirical formula?

Empirical formula is the chemical formula of compound that gives proportions (ratios) of the elements present in compound but not the actual numbers or arrangement of atoms.

For sulfur: 40.0% of 100 g = 40 g = 40 / 32 mol = 1.25 mol

For oxygen: 60.0% of 100 g = 60 g = 60 / 16 mol = 3.75 mol

The ratio of the number of moles of sulfur to the number of moles of oxygen is 1.25 mol / 3.75 mol = 1/3.

The empirical formula is therefore SO3 with one sulfur atom and three oxygen atoms.

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If 100 cm3 of oxygen reacts with 30 cm3 of methane in the following reaction, how much oxygen will be left at the end of the reaction?

CH4(g)+2O2(g) → CO2(g)+2H2O(l)

Answers

Answer:

If it's liquid, this is the total volume:300+100= 400 cm3

Explanation:

CH4 + 2O2 –––> CO2 + 2 H2O

100 . . 500. . . . . . 0 . . . . . .0. . . (initial)

100. . . 200 . . . 100 . . . . .200 . . (reaction)

0. . . . 300 . . . 100 . . . . . 200 . .(final)

H2O can be either gas or liquid. If it is gas, this is the total volume of gases : 300 + 100 + 200 = 600 cm3

If it's liquid, this is the total volume:300+100= 400 cm3

For many purposes we can treat ammonia (NH) as an ideal gas at temperatures above its boiling point of 33. "C. Suppose the pressure on a 6.0 m sample of ammonia gas at 16.0°C is tripled. Is it possible to change the temperature of the ammonia at the same time such that the volume of the gas doesn't change? A. Yes
B. No
If you answered yes, calculate the new temperature of the gas. Round your answer to the nearest "C.

Answers

Option (a) is correct. Yes.

The new temperature of the gas is 594°C. This is calculated from the Gay-Lussac's law.

Let us consider the initial pressure is P1

The final pressure P2 = 3P1

Volume remains constant.

We can apply here the Gay-Lussac's Law. Gay-Lussac's Law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas where the volume is kept constant. It is a gas law which states the pressure of a gas varies directly with temperature when mass and volume are kept constant. As the temperature increases the pressure will also increase. According to this law, a gas's pressure is directly proportional to temperature. here we assume a constant volume and a constant number of moles. As pressure increases or decreases, the temperature also increases or decreases.

    P1/T1  =  P2/T2

          T2 = P2 * T1 / P1  

               =  3P1 * 289 / P1  

               =  867 K

   T2 = 867 - 273 = 594° C

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There is always some form of_______ exchanged in both chemical and physical changes.
A. Energy
B. Volume
C. Mass
D. Density

Answers

A. Energy I believe
I pretty sure it’s A. Energy

Give an example of an endothermic reaction

Answers

Answer: photosynthesis

Explanation:

Answer:

The chemical reactions which occurs by absorption of heat are called endothermic reactions.

Examples : Melting of ice cubes.

Explanation:

Melting solid salts.

N2(g) + O2(g) + heat = 2NO(g)

So,

N= Nitrogen

O= Oxygen

NO= Nitric

A mass of 2.3g of an unknown solute is added to 14.3 benzene. (Kf = 5.12 C) The freezing point decreased by 5.1. What is the molar mass of the solute?

Answers

The molar mass of the solute is 163 g/mol.

What is molar mass?

Molar mass can be defined as the mass in grams of one mole of a substance. The units of molar mass are grams per mole abbreviated as g/mol.

The molar mass of the solute can be calculated using the equation:

ΔTf = Kf * molality

molality = ΔTf / Kf

molality = 5.1 / 5.12

molality = 0.99 g/mL

Since the molality is the number of moles of solute per 1 kilogram of solvent, we can find the number of moles of solute in 14.3 g of benzene.

n = molality * (14.3 g) / 1000 g/kg = 0.014 moles

The molar mass of the solute can be calculated as:

molar mass = (2.3 g) / (0.014 moles) = 163 g/mol.

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when comparing the acidity of two similar acids of general formula ha, the electronegativity of element a is more important for elements in the same ___ of the periodic table, whereas bond strength is more important for elements in the same ___.

Answers

The electronegativity of the element a is more important for elements in the same period of the periodic table, whereas bond strength is more important for elements in the same group.

Period: The horizontal rows are known as periods. Each period will corresponds to the successive occupation of the orbitals in a valence shell of the atom, with the long periods corresponding to the occupation of the orbitals of the d-subshell.

Group: The vertical columns in a periodic table are known as groups. There are 18 numbered groups in the periodic table; the 14 f-block columns, between the groups 2 and 3, are not numbered. The elements in a group have similar physical as well as chemical characteristics of the outermost electron shells of their atoms because the most chemical properties are dominated by the orbital location of the outermost electron.

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The following reaction is the reversible decomposition of nitrous oxide (laughing gas).
2N2O (g) ⇌ 2N2(g) + O2(g)
If the Keq is 7.3 x 1034 and the concentration of N2O(g) is 1.4 x 10-2M at equilibrium, what are the concentrations of the other species at equilibrium?

Answers

The concentrations of the other species at equilibrium is 5.1 x 10⁻²M.  If this state is not disturbed by an external force, it will persist unbrokenly.

What is equilibrium?

In physics, a system is said to be in equilibrium when neither it internal energy state nor its state of motion tend to vary over time. If a simple mechanical body experiences either accelerometers nor rotational acceleration, it is thought to be in equilibrium. If this state is not disturbed by an external force, it will persist unbrokenly.

2N[tex]_2[/tex]O (g) ⇌ 2N[tex]_2[/tex](g) + O[tex]_2[/tex](g)

Keq = [N[tex]_2[/tex]]² [ O[tex]_2[/tex]] /[N[tex]_2[/tex]O]²

substituting all the given values in the above equation, we get  

7.3 x 10³⁴= X³/1.4 x 10⁻²

X=5.1 x 10⁻²M

Therefore, the concentrations of the other species at equilibrium is 5.1 x 10⁻²M.

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The equilibrium constant Kc for the reaction of nitrogen and hydrogen to produce ammonia at a certain temperature is 6.00 × 10−2. Calculate the equilibrium concentration of ammonia if the equilibrium concentrations of nitrogen and hydrogen are 4.26 M and 2.09 M, respectively.

Answers

Equilibrium  constant of a reaction is the ratio of the molar concentration of product to that of reactants at equilibrium. For the given  reaction, the equilibrium constant is given, 6.00 ×10⁻² . Then, the concentration of ammonia is 0.53 M.

What is equilibrium  constant ?

A compound or element gets ionized to form its anion or cation by the gain or lose of electrons.

Here, hydrogen and nitrogen reacts to give ammonia. The ratio of product of molar concentrations of products to the product of molar concentrations of the reactants at equilibrium is called the equilibrium constant.

The equilibrium constant constant of the given reaction is written as:

K = [H₃O]⁺ [CH₃COO-]/[CH₃COOH]

Given [H₂] =  2.09 M

and  [N₂] = 4.26 M.

then, K = [NH₃]/ 7.6 M × 16.4 M = 6.00 ×10⁻²

Then, [NH₃] = 6.00 ×10⁻²× 7.6 M × 16.4 M = 0.53 M

Therefore, the equilibrium concentration of ammonia is 0.53 M.

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Convert a density of 7.2g/mL into the unit KG/L

Answers

By unit conversion the density of 7.2gmL is equal to 7.2 kg/L.

What is unit conversion?Unit conversion is the process of converting different units of measurement for the same quantity, typically using multiplicative conversion factors.Unit conversion is a multi-step process that involves division or multiplication by a numeral factor.To convert the units we have to construct a fraction equal to one, multiply the original measurement by that fraction, and simplify.

Here given, the density = 7.2 g/mL

Since,

We know that,

1g = 0.001 kg a

And also,

1mL = 0.001L

Now, let's convert 7.2 g/mL to kg/L:

7.2 g/mL x 1kg/1000g x 1000mL/1L

= 7.2 kg/L

As a result, by the unit conversion the density 7.2 g/mL is converted to  7.2 kg/L.

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The decomposition of ethanol (C2H5OH) on an alumina (Al2O3) surface was studied at 600 K. Concentration versus time data were collected for this reaction, and a plot of [A] versus time resulted in a straight line with a slope of -4.00 10-5 mol/L · s.
C2H5OH(g) → C2H4(g) + H2O(g)
(b) If the initial concentration of C2H5OH was 1.10 10-2 M, calculate the half-life for this reaction.
(c) How much time is required for all the 1.10 10-2 M C2H5OH to decompose?

Answers

The time that is taken  is obtained as 5.21 × 10⁻⁵ s.

What is zero-order kinetics?

For the zero order reaction that we have, we can see that;

rate = 24.00 × 10²⁵ M/s

From the integrated rate law:

[C₂H₅OH]t = [C₂H₅OH]₀ - 24.00 × 10²⁵ M/s × t

We now obtain the half life as;

t(1/2) = [C₂H₅OH]₀ / 2 × k

t(1/2) = (1.25 × 10²² M) / 2 × (24.00 × 10²⁵ M/s) = 2.60 × 10⁻⁵ s

The time that is required is now obtained as;

[C₂H₅OH]t = [C₂H₅OH]₀ - 24.00 × 10²⁵ M/s × t

0 M = 1.25 × 10²² M - 24.00 × 10²⁵ M/s × t

t = 5.21 × 10⁻⁵ s

The rate constant for the decomposition of ethanol on an alumina surface is 24.00 × 10²⁵ M.

The integrated rate law is: [C₂H₅OH]t = [C₂H₅OH]₀ - 24.00 × 10²⁵ M/s × t

If the initial concentration of C₂H₅OH was 1.25 × 10²² M, the half-life is 2.60 × 10⁻⁵ s.

The time required for all the 1.25 × 10²² M C₂H₅OH to decompose is 5.21 × 10⁻⁵ s.

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