When enzyme activity rate has reached stability, an increase in the enzyme concentration will.

Answers

Answer 1

When enzyme activity rate has reached stability, an increase in the enzyme concentration will not make any difference in the enzyme rate.

What is an enzyme?

Enzyme are proteins that act as biological catalysts.

How is enzyme activity measured?

Enzyme activity is measured in micromoles of substrate converted (or product generated) per minute, which represents the rate of reaction catalyzed by that enzyme.

The activity an enzyme catalyzes in a reaction is a measure of how much of it is present. Numerous variables, including temperature, pH, and others, have an impact on the connection between activity and concentration.Every time an enzyme's concentration rises, so does its activity. This is as a result of the availability of additional enzymes to bind to the substrate. The reaction time quickens as a result. Increasing the concentration of the enzyme will quicken the reaction as long as there is a substrate for it to bind to.

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Answer 2

When enzyme activity rate has reached stability, an increase in the enzyme concentration will not make any difference in the enzyme rate.

What is an enzyme?

Enzymes are proteins that act as biological catalysts.

How is enzyme activity measured?

Enzyme activity is measured in micromoles of substrate converted (or product generated) per minute, which represents the rate of reaction catalyzed by that enzyme.

The activity an enzyme catalyzes in a reaction is a measure of how much of it is present.Numerous variables, including temperature, pH, and others, have an impact on the connection between activity and concentration.Every time an enzyme's concentration rises, so does its activity.This is as a result of the availability of additional enzymes to bind to the substrate.The reaction time quickens as a result.Increasing the concentration of the enzyme will quicken the reaction as long as there is a substrate for it to bind to.

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Related Questions

The relationship between the providers and the customer, where the providers keep the promises made to the customer, is also known as:_______.

Answers

The relationship between the providers and the customer, where the providers keep the promises made to the customer, is also known as a service-level agreement.

A service-level agreement (SLA) outlines the degree of service that a client expects from a supplier, the metrics used to measure that performance, and any penalties that may be imposed if the agreed-upon service standards are not fulfilled.

A service level agreement (SLA) is a straightforward contract between a service provider and their client (internal or external), outlining the services to be provided, the level of responsiveness to be anticipated, and the performance metrics to be used.

A Service Level Agreement (SLA) has been adopted by the Information Technology Department to direct its project management. Our SLA's objectives are. to enhance management effectiveness

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Which of the following is the correct balanced equation for the dissociation of calcium chloride (CaC*l_{2}) in water (H_{2}*O)?

D. CaC*l_{2}(s) * HLO\\ Ca^ 2+ (aa)+2Cl^ - (aq)

C. 2CaC*l_{2} * (s) ^ (H * 0)\\ Ca^ 3+ (aq)+2Cl^ - (a

A. 2CaC*l_{2} * (s) ^ (H / 0)\\ 2Ca^ 3+ (aq)+Cl^ - (aq)

B. CaC*l_{2}(s) * H_{2}*O,Ca^ 2+ (aq)+Cl^ - (aq)

Answers

The correct balanced equation for the dissociation of calcium chloride is [tex]CaCl_2 (s) --- > Ca^{2+} (aq) + 2Cl^- (aq)[/tex]. Option D.

What is dissociation?

Dissociation in chemistry refers to the process whereby a compound reversibly breaks down to its constituent elements (usually in ion forms) within a solution.

The constituent elements in calcium chloride are calcium and chlorine. Calcium ion is written as [tex]Ca^2^+[/tex] while chlorine ion is written as [tex]Cl^-[/tex]. Calcium chloride itself is written as [tex]CaCl_2[/tex].

Thus, the equation of dissociation of calcium chloride in water can be summarized as:

[tex]CaCl_2 (s) --- > Ca^{2+} (aq) + 2Cl^- (aq)[/tex]

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A coupled reaction is a pair of reactions occurring together in which the energy released by one reaction is used in bond formation in the second reaction. For example, glycolysis and pyruvate processing form a coupled reaction. Explain how coupling reactions allows a cell to capture the free energy of glucose oxidation rath

Answers

A coupled reaction is a pair of reactions occurring together in which the energy released by one reaction is used in bond formation in the second reaction. For example, glycolysis and pyruvate processing form a coupled reaction.

Chemical reactions that involve a common intermediate and the transfer of energy from one side to the other are referred to as coupled reactions. An illustration is the endergonic process of ATP synthesis, which is connected to proton gradient dissipation.

High-energy phosphate bonds are broken during the hydrolysis of an ATP molecule, which releases a lot of energy into the exergonic form. The coupled reaction is crucial in the transformation of this energy into an endergonic state. Coupled reactions are those that occur when two separate reactions are driven by the free energy released during the first reaction.  




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What mass of lithium carbonate (in grams) must be added to 25.0 mL of 0.335 M hydrochloric acid solution to completely neutralize the acid

Answers

Answer: 0.309g

Explanation:

10.Using the below valency chart, write chemical formula for aluminum oxide and
aluminum chloride

Answers

The chemical formula of aluminum chloride is AlCl₃ and the  chemical formula of aluminum oxide is Al₂O₃.

Aluminum chloride

The chemical formula of aluminum chloride is written as;

Al³⁺  + Cl⁻   → AlCl₃

Aluminum oxide

The chemical formula of aluminum oxide is written as;

Al³⁺  + O²⁻   → Al₂O₃

Thus, the chemical formula of aluminum chloride is AlCl₃ and the  chemical formula of aluminum oxide is Al₂O₃.

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The labels required by the Department of Transportation (DOT) must be placed on ________ when chemicals are being shipped. These labels may look similar to GHS pictograms and categorize hazardous chemicals into ________ different categories. The labels required by the Department of Transportation (DOT) must be placed on ________ when chemicals are being shipped. These labels may look similar to GHS pictograms and categorize hazardous chemicals into ________ different categories.

Answers

The labels required by the Department of Transportation (DOT) must be placed on outside containers when chemicals are being shipped.

These labels may look similar to GHS pictograms and categorize hazardous chemicals into nine different categories.

OSHA recently revised the Hazard Communication Standard, and as part of that modification, new standards for labeling dangerous chemicals were established.

As a result, workers will have better information available on the safe handling and use of hazardous chemicals, thereby allowing them to avoid injuries and illnesses related to exposures to hazardous chemicals.

These modifications will aid in ensuring higher standards and uniformity in the categorization and labeling of all substances.

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7. A movable piston is allowed to cool from 392°F to 104°F. If the initial volume is 105 mL,
what will be the new volume?

Answers

Answer:

27.9 mL

Explanation:

To find the new volume, you need to use the Charles' Law equation:

V₁ / T₁ = V₂ / T₂

In this equation, "V₁" and "T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature.

V₁ = 105 mL                     V₂ = ? mL

T₁ = 392 °F                       T₂ = 104 °F

V₁ / T₁ = V₂ / T₂                                            <----- Charles' Law

105 mL / 392 °F = V₂ / 104 °F                     <----- Insert values

0.26785 = V₂ / 104 °F                                 <----- Simplify left side

27.9 = V₂                                                     <----- Multiply both sides by 104

Are isotopes similar to ions, yes or no?

Answers

Answer:

Yes

Explanation:

Isotopes are atoms of the same element that have different numbers of neutrons in their nuclei. Everything else about them is the same.(If you want more explanation tell me).

Isotopes are atoms that have the same number of protons but different numbers of neutrons. An ion is an atom or molecule with a positive or negative charge. Both atoms and ions are composed of electrons that are exchangeable. So in some way they are similar

what are the differences between the double displacement reaction and the displacement reaction ? explain with a chemical equations​

Answers

In a displacement reaction, a more reactive element replaces a less reactive element from a compound. In a double displacement reaction, two atoms or a group of atoms switch places to form new compounds.

Explaination:

Displacement chemical reaction :

A displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecule. For instance, when iron is added to a copper sulphate solution, it displaces the copper metal.

Fe + CuSO4 → FeSO4 + Cu. When zinc is added to a copper sulphate solution, it displaces the copper metal. ...

Zn + CuSO4 → ZnSO4 + Cu.

etc.

Double Displacement Chemical Reaction :

Double displacement reactions take place mostly in aqueous solutions wherein the ions precipitate and exchange of ions takes place. For example, when a solution of barium chloride is mixed with sodium sulphate, a white precipitate of barium sulphate is formed rapidly. These reactions are ionic in nature.

Here are some examples of double displacement reaction: AgNO 3 + NaCl → AgCl + NaNO.

2NaCl + CaSO4 → Na2SO4+ CaCl.

H2SO4 + 2LiOH ⇌ Li2SO4 + 2H2O.

What is the temperature of an 11. 2-l sample of carbon monoxide, co, at 744 torr if it occupies 13. 3 l at 55 °c and 744 torr?.

Answers

The temperature of an 11.2 L sample of carbon monoxide, CO, at 744 torr is 276 K or 3°C.

What is Charles's law?

Charles's law states that, "When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion".

V ∝ T

[tex]\frac{V}{T}=K[/tex]

Where,

V is the volume of the gas,

T is the temperature of the gas (measured in kelvins), and

K is a non-zero constant.

In two different states, an initial state 1 and a final state 2, the equation is,

[tex]\frac{V1}{T1}=\frac{V2}{T2}[/tex]

Given data:

V1 = 11.2L

V2 = 13.3L

T2 = 55°C = 328K

By substituting the given data,

[tex]\frac{11.2}{T1}=\frac{13.3L}{328K}[/tex]

[tex]T1=\frac{11.2L/328K}{13.3L}[/tex]

T1 = 276K = 3°C

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What is the temperature of an 11. 2-l sample of carbon monoxide, co, at 744 torr if it occupies 13. 3 l at 55 °c and 744 torr?.

Answers

The temperature of an 11.2 L sample of carbon monoxide, CO, at 744 torr is 276 K or 3°C.

What is Charles's law?

Charles's law states that, "When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion".

According to the given information:

V ∝ T

V/T = K

Where,

V is the volume of the gas,

T is the temperature of the gas (measured in kelvins), and

K is a non-zero constant.

In two different states, an initial state 1 and a final state 2, the equation is,

[tex]\frac{V 1}{T 1}=\frac{V 2}{T 2}[/tex]

Given data:

V1 = 11.2L

V2 = 13.3L

T2 = 55°C = 328K

By substituting the given data,

[tex]\begin{aligned}&\frac{11.2}{T 1}=\frac{13.3 L}{328 K} \\&T 1=\frac{11.2 L / 328 K}{13.3 L}\end{aligned}[/tex]

∴T1 = 276K = 3°C

The temperature of an 11.2 L sample of carbon monoxide, CO, at 744 torr is 276 K or 3°C.

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The isotope 226Ra has a half-life for radioactive decay of 1600 Y. How long will it take the amount of 226 Ra in a sample of 226RaCl2 to decrease by 25%

Answers

the correct answer is 226Ra is half and long as radioactive decay

Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1005g sample of menthol is combusted, producing 0.2829g of CO2 and 0.1159g of H2O.

What is the empirical formula of menthol?

If the compound has a molar mass of 156 g/mol, what is its molecular formula?

Answers

The Empirical formula of compound is C₁₀H₂₀O₁. The Molecular Formula of compound is C₁₀H₂₀O₁.

What is Empirical Formula ?

Empirical formula is the simplest whole number ratio of atoms present in given compound.

[tex]\text{Mass of C} = 0.2829\ g\ CO_2 \times \frac{12\ g\ C}{44\ g\ CO_2}[/tex]

                = 0.07720 g C

[tex]\text{Mass of H} = 0.1159\ g\ H_2O \times \frac{2\ g\ H}{18\ g\ H_2O}[/tex]

                = 0.01297 g H

Mass of O = Mass of methanol - mass of C - mass of O

                 = 0.1005 g - 0.07720 g - 0.01297 g

                 = 0.01033 g

Element    Mass/g         Moles              Ratio      Integers

C                0.07720       0.006428        9.956      10

H                0.01297        0.01287            19.93      20

O                0.01033        0.0006456       1              1              

The Empirical formula of compound is C₁₀H₂₀O₁.

How to find the Molecular formula of compound ?

Molecular formula = Empirical formula × n

[tex]n = \frac{\text{Molar Mass}}{\text{Empirical formula weight}}[/tex]

  [tex]= \frac{156}{156}[/tex]

  = 1

Molecular formula = n × Empirical formula

                               = 1 (C₁₀H₂₀O₁)

                               = C₁₀H₂₀O₁

Thus from the above conclusion we can say that The Empirical formula of compound is C₁₀H₂₀O₁. The Molecular Formula of compound is C₁₀H₂₀O₁.

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In a closed container, nitrogen gas and hydrogen gas react to produce ammonia.
N2(g) + 3H₂(g)2NH3(g)
Which statement describes the graph of concentration versus time for ammonia as the system approaches dynamic equilibrium?
It curves down and levels out.
It curves up and levels out.
It steadily decreases to zero.
It steadily increases to a maximum.

Answers

[tex]\frac{1}{2} N_{2} (g)+\frac{3}{2} H_{2} (g)[/tex]⇌[tex]NH_{3} (g)[/tex]

It curves up and levels out.

What type of reaction are nitrogen and hydrogen form ammonia?

Three hydrogen atoms and one nitrogen atom combine to form ammonia. It has a tetrahedral structure. Ammonia is a fertilizer and a cleaning agent and is used in the manufacturing of nitric acid. NH3 is typically found as a gas and is corrosive and dangerous when inhaled over time.Chemical equations express chemical reactions in the form of chemical formulas with an arrow pointing from reactant to product. A balanced chemical equation has the same amount of atoms of each element on both sides of the equation.Here, the balancing of a chemical equation is governed by the law of conservation of mass.The chemical reaction is Nitrogen gas and hydrogen gas mixed to generate ammonia.

The statement describes the graph of concentration versus time for ammonia as the system approaches dynamic equilibrium: It curves up and levels out.

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As the system approches to dynamic equilibrium

It curves up and levels out.

What is Haber's Process?

Haber's process is used to produce Ammonia in industries.

In Haber's process , the Nitrogen reacts with Hydrogen and product formed is Ammonia.

N2+3H²→2NH3

The reactants which are used in this Process are :

1)Iron is used as catalyst

2) Air which supplies the nitrogen

3) Pressure is 200atm

4) Temperature used is 400-45°C .

Ammonia is used for :

*Agriculture uses as Fertilizer

* In Refrigeration

* Used in production of medicine

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You need a 70% alcohol solution. On hand, you have a 135 mL of a 20% alcohol mixture. You also have 85% alcohol mixture. How much of the 85% mixture will you need to add to obtain the desired solution

Answers

To obtain the desired solution:

450 mL of 85% alcohol solution is needed to obtain the desired solution.  

Calculation:

Let x be the amount of the 85% alcohol required

The volume of the resulting 70% alcohol solution will then be = x + 135 ml

135 mL of the 20% alcohol solution contains the amount of "pure" alcohol is =  0.20×135 mL.

The 85% alcohol solution contains x mL of "pure" alcohol = 0.85× x mL.

The total amount of the "pure" alcohol is the sum

=  0.20×135 + 0.85× x mL.

It should be equal to the amount of the "pure" alcohol in the mixture, which is = 0.70× (x+135) ml.

So, your "pure alcohol" equation is,  

=  0.85× x + 0.20×135 = 0.70× (x+135)

Simplify and solve it for x:

0.85x + 0.20×135 = 0.70x + 0.70×135,

0.85x - 0.70x = 0.70×135 - 0.20×135,

0.15x = 67.5

x = 67.5/0.15

= 450mL.

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If you remove two protons and two neutrons from a gold atom (au), what new element is formed (if any)?

Answers

Answer: Iridium

Explanation:

The atomic number of Iridium is 77.

The element we obtain if we remove two protons and two neutrons from the gold is iridium. The atomic number of gold is 79 and that of iridium is 77.

What is iridium?

Iridium is the 77th element in the periodic table. It is a transition metal like gold, silver, platinum etc. Iridium is a d-block metal and have its valence electrons in d-orbital.

Gold is 79th element and it is also a transition metal. Gold is a precious metal used in making ornaments and its having high cost.

The atomic number of gold is 79 and it have 79 electrons and 79 protons. The atomic number of an element is the number of its protons and the mass number of the element is the sum of number of electrons and number of protons.

If we remove two protons from the 79 protons of gold the proton number becomes 77 and thus the atomic number. The elements with the atomic number 77 is iridium.

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Calculate the molecular weight of Na2sio3

Answers

Answer:

Answer:122 g/ mol

Answer:122 g/ molExplanation:

Answer:122 g/ molExplanation:first must find the molar mass of each element in the compound

Answer:122 g/ molExplanation:first must find the molar mass of each element in the compoundNa= 23×2 =46 g/mol

Answer:122 g/ molExplanation:first must find the molar mass of each element in the compoundNa= 23×2 =46 g/molSi= 28 g/mol

Answer:122 g/ molExplanation:first must find the molar mass of each element in the compoundNa= 23×2 =46 g/molSi= 28 g/molO= 16× 3 = 48 g/ mol

Answer:122 g/ molExplanation:first must find the molar mass of each element in the compoundNa= 23×2 =46 g/molSi= 28 g/molO= 16× 3 = 48 g/ molhence , summation of the molar masses

Answer:122 g/ molExplanation:first must find the molar mass of each element in the compoundNa= 23×2 =46 g/molSi= 28 g/molO= 16× 3 = 48 g/ molhence , summation of the molar masses46+28+48 = 122g/mol

The molecular weight of [tex]\rm Na_2SiO_3[/tex] (sodium silicate) is approximately 122.07 g/mol.

To calculate the molecular weight of [tex]\rm Na_2SiO_3[/tex] (sodium silicate), we need to add the atomic weights of each individual element in the compound.

The atomic weights are as follows:

- Sodium (Na) = 22.99 g/mol

- Silicon (Si) = 28.09 g/mol

- Oxygen (O) = 16.00 g/mol

Now, multiply the atomic weights by the number of atoms in the compound:

- Sodium (Na) = 2 atoms * 22.99 g/mol = 45.98 g/mol

- Silicon (Si) = 1 atom * 28.09 g/mol = 28.09 g/mol

- Oxygen (O) = 3 atoms * 16.00 g/mol = 48.00 g/mol

Finally, add up all the atomic weights:

[tex]\rm \[Molecular \, weight \, of \, Na2SiO3 = 45.98 g/mol + 28.09 g/mol + 48.00 g/mol \\= 122.07 g/mol\][/tex]

So, the molecular weight of [tex]\rm Na_2SiO_3[/tex] (sodium silicate) is approximately 122.07 g/mol.

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A weather balloon calibrated at 0.00 °c to have a volume of 12.0 l has what volume at -22.8 °c assuming pressure is held constant?

Answers

Considering the Charles's law, the volume at 22.8 °C is 10.9978 L.

Charles's law

Charles's law establishes the relationship between the temperature and the volume of a gas when the pressure is constant.

Charles's law says that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases, and as the temperature decreases, the volume of the gas decreases. That is, the volume is directly proportional to the temperature of the gas.

Mathematically, Charles' law is a law that says that when the amount of gas and pressure remain constant, the ratio between volume and temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Considering an initial state 1 and a final state 2, it is fulfilled:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

Volume at -22.8 °C

In this case, you know that:

V1= 12 LT1= 0 °C= 273 KV2= ?T2= -22.8 °C= 250.2 K

Replacing in Charles's law:

[tex]\frac{12 L}{273 K} =\frac{V2}{250.2 K}[/tex]

Solving:

V2= [tex]250.2 K x\frac{12 L}{273 K}[/tex]

V2= 10.9978 L

Finally, the volume at 22.8 °C is 10.9978 L.

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The presence of no subscript for an element in a chemical formula means that there is/are?

Answers

Answer:

only one atom of that element

Explanation:

Example:

   H2 O    has two hydrogenatoms and ONE Oxygen atom

The presence of no subscript for an element in a chemical formula means that there is a single atom of that element in the compound.

In a chemical formula, subscripts are used to indicate the number of atoms of each element present in a compound. When an element has no subscript, it means that there is only one atom of that element in the compound.

For example, in the chemical formula H₂O, the subscript 2 indicates that there are two hydrogen atoms present. On the other hand, the absence of a subscript for oxygen means that there is only one oxygen atom in the compound.

Thus, when there is no subscript for an element in a chemical formula, it signifies that there is a single atom of that element in the compound.

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The population that experienced the highest radioactivity from chernobyl in norway were:______

Answers

The population that experienced the highest radioactivity from chernobyl in norway were "a small community of reindeer herders called the Saami".

Typically, the term "population" denotes the total quantity of people living in a particular area, be it a city or town, region, country, continent, or even the entire world.

The native reindeer herders of Scandinavia could be known as the Sámi. These breathtaking images capture a herd during its yearly journey through summer pastures as well as wintering areas.

Therefore, the population that experienced the highest radioactivity from chernobyl in norway were "a small community of reindeer herders called the Saami".

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During the procedure, several wases with cold methanol were done. why was it important to use cold methanol? (In nitration of methyl benzoate)

Answers

The use of cold methanol is important because it is used to recrystallize or solidify the product.

Since, ice bath is also used in nitration of methyl benzoate because in this reaction the concentrated acid like sulfuric acid is used with water and it is very exothermic.

The formation pure solid from the impure solid compound by mixing with hot solvent and form saturated solution. Now, this solution as cools and pure crystal grows when solubility of the compound decreases. This whole process is called re-crystallization.

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Suppose you prepare 500 ml of a 0.10 Msolution of some salt and then spill some of it. What happens to the concentration of the solution left in the container

Answers

The concentration of the solution left in the container will remain same.

What is concentration?

The quantity of a chemical in a mixture is expressed by the substance's concentration. Concentration can be expressed in numerous ways. Chemists refer to the substance as a solute, and the substance that contains the solvent dissolves the solute is referred to as a solution.

Importance of concentration -

Because it controls how frequently particles collide in solution and, in turn, indirectly determines the speeds of reaction and the circumstances at equilibrium, the concentration of a solvent is crucial for understanding chemical reactions.The amount of a solute present in a specific quantity of a solvent or solution is known as the concentration of the solution. In chemistry. Determining the stoichiometry of reagents for solution reactions requires knowledge of the solute concentration.

The calculation of concentration is done by various methods; some are given below,

Molarity (M) - moles of solute/liters of solution.Mass Concentration (kg/m³ or g/L) - mass of solute/volume of solutionNormality (N) - grams active solute/liters of solutionMolality (m) - moles of solute/mass of solvent (not mass of solution!)Mass Percent (%) - mass solute/mass solution x 100% (mass unit is same for both solute and solution)Volume Concentration (no unit) - volume of solute/volume of mixture (same units of volume for each)

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Part 1. A chemist reacted 12.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.

F2 + 2NaCl → Cl2 + 2NaF

Part 2. Explain how you would determine the mass of sodium chloride that can react with the same volume of fluorine gas at STP.​

Answers

The mass of NaCl that reacted with 12 lit of F2 at 280 K and 1.50 atm= 0.027 gm.

the mass of sodium chloride that can react with the same volume of fluorine gas at STP = 0.01 gm.

Given,

F2 + 2NaCl → Cl2 + 2NaF

PART-1:

So, from the given reaction we can say that 2 moles of NaCl is required for 1 mole of F2.

By using combined gas law,

[tex]\frac{P1V1}{n1T1} =\frac{P2V2}{n2T2}[/tex]

here , P1 =P2

and moles of NaCl is twice as pf F2

∴n2=2n1

and also T1 = T2

by simplifying the reaction we get..

[tex]\frac{V1}{n1} = \frac{V2}{2n1}[/tex]

V2= 2 × V1

∴V2 = 2 ×12

      = 24 Lit.

from ideal gas law ,

we can find the moles of NaCl,

PV= nRT

n=[tex]\frac{PV}{RT}[/tex]

n= 1.5 × 24 ÷( 0.082 × 280)

∴ n= 1.57

mole = mass / molecular mass

so, molecular mass of NaCl = 58.5

∴ mass of NaCl used = 1.57/58.5

                                 = 0.027 gm

PART -2:

At, STP

T= 273 K

P = 1atm

V= 12 lit

n= ?

using ideal gas law we can determine the number of moles

PV= nRT

n = 1 ×12 ÷(0.082 × 273)

n= 0. 54

∴ mass of NaCl = 0.54 / 58.5

                         = 0.01 g

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Answer: for part 1: our equation is F2 + 2NaCI -> CI2 + 2NaF. We can solve this by using the gas law(s). The ideal gas law is PV = nRT. P = pressure V = volume n = amount of substance R = ideal gas constant and T = temperature. We know that 2 moles of NaCI is crucial for 1 mole of F2. P1=P2 and T1=T2. we multiply the 12 liters by 2. which is 24 liters. We know NaCI consists 58.44/58.5g per mole. if we divide that by n of (nRT) we find the mass. we mutiply 24 by 1.5. which is 36 the divide by 0.082 which was multiplied by 280. and u get 1.567 or 1.57. we divide that by the g of NaCI. u get 0.027.

for part 2: we STP stands for Standard Temperature and Pressure. we can also use the ideal gas law. PV = nRT. Using this knowledge we can determine the mass. T is 273k and p is 1 atm. v is 12. we multiply 0.082 and 273. 22.386. we divid that by 12. we get 0.54. then we divide the 0.54 by the g again. which is 0.01g.

Explanation:

A 4.40g piece of solid CO2 (dry ice) is allowed to sublime in a balloon. The final volume of the balloon is 1.00 L at 300 K. What is the pressure of the gas

Answers

Answer:

2.46 atm

Explanation:

We are going to use ideal gas law   PV = n RT

find n    mole weight of CO2 = 12.011 + 2 * 15.999 = ~ 44 gm/mole

SO    4.4 gm / 44 gm/mole = .1 mole     (this is 'n' )

R = gas constant = .082057366  L-atm/k-mol

T  must be in Kelvin = 300

PV = nRT

P * 1  = .1 * .082057366 * 300

P = 2.46 atm

The partial pressure of oxygen in atmospheric air at sea level is Group of answer choices greater than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. less than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. equal to the partial pressure of oxygen in atmospheric air at the top of Mt. Everest.

Answers

A. The partial pressure of oxygen in atmospheric air at sea level is greater than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest.

What is partial pressure?

Partial pressure is the pressure exerted by a component of mixture of gases.

Partial pressure of oxygen in different location of the Earth

The depth (distance from top to bottom) of the atmosphere is greatest at sea level and decreases at higher altitudes.

With greater depth of the atmosphere, more air is pressing down from above.

Air pressure is greatest at sea level and falls with increasing altitude.

Thus, the partial pressure of oxygen in atmospheric air at sea level is greater than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest.

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How many moles of electrons are transferred when the two half-reactions shown below are combined to generate the spontaneous balanced chemical reaction with the lowest possible integer coefficients

Answers

6 moles of e-  are transferred when the two half-reactions shown below are combined to generate the spontaneous reaction with the lowest possible integer coefficients

A spontaneous reaction is one that favors the creation of products under the reaction's current conditions. A bonfire that is raging and exothermic is an illustration of a spontaneous reaction (there is a decrease in the energy of the system as energy is released to the surroundings as heat)

A redox reaction's oxidation or reduction reaction component is known as a half-reaction (or half-cell reaction). By taking into account the shift in oxidation states of the many chemicals participating in the redox reaction, a half-reaction is obtained. At each electrode, there are two chemical reactions taking on in the cell. Half-reactions are what we refer to as. An oxidation reaction that releases electrons occurs at the anode.

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The mass percentage of pencils in a collection of keys that weigh
132.456 g and a pencil that weighs 9.540 g is
%?

Answers

Answer:

Mass Percent of Pencils  =  7.20%

Explanation:

The mass percent can be calculated using the following equation. In this case, the "solute" is the pencil and the "solution" is the collection of pencils.

                               mass solute
Mass Percent  =  ------------------------  x 100%
                              mass solution

                                         9.540 g (pencil)
Mass Percent  =  --------------------------------------------  x 100%
                              132.456 g (pencil collection)

Mass Percent  =  7.20%

A student determines the mass of a 100 mL beaker filled with 50 mL of water to be 154.34 grams. After a tablet reacts with the water, the mass including the dissolved tablet is 157.26 grams. How much tablet was left in the beaker after the reaction

Answers

A student determines the mass of a 100 mL beaker filled with 50 mL of water to be 154.34 grams. After a tablet reacts with the water, the mass including the dissolved tablet is 157.26 grams. 438 grams tablet was left in the beaker after the reaction.

What is Stoichiometry ?

Stoichiometry helps us use the balanced chemical equation to measure quantitative relationships and it is to calculate the amounts of products and reactants that are given in a reaction.

What is Balanced Chemical Equation ?

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

Now we have to write the balanced chemical equation

NaHCO₃ + H₂O → NaOH + H₂CO₃

Mass = 157.26 - 154.32

         = 2.92

Volume = 100 + 50 ml

             = 150 ml

Mass of tablet = 2.92 × 150

                        = 438 grams  

Thus from the above conclusion we can say that A student determines the mass of a 100 mL beaker filled with 50 mL of water to be 154.34 grams. After a tablet reacts with the water, the mass including the dissolved tablet is 157.26 grams. 438 grams tablet was left in the beaker after the reaction.

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What titrant will be used to titrate the 0. 02 m hcl phenol red solution?

Answers

The NaOH will be used What titrant  to titrate the 0. 02 m hcl phenol red solution.

Acid-base titrations may be the most typical titrations, although there are numerous more forms as well. Take a look at this illustration where sodium hydroxide is used to titrate a sample of hydrochloric acid (HCl) (NaOH). The titrant (NaOH), which is added gradually throughout the duration of the titration, has been added to the unknown solution.

Titrants are solutions with known concentrations that are added to solutions whose concentrations must be determined. The solution for whom the concentration needs to be determined is known as a titrant as well as analyte.

Therefore, the NaOH will be used as a titrant to titrate the 0. 02 m hcl phenol red solution.

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1.For the first ten reactions, write a balanced reaction for each tube in which a reaction occurred. If there was no reaction, write NR

Answers

The equations of reaction occurring in the tubes are as follows:

2 MnO₄⁻ + 6 Br⁻ + 8 H⁺ → 2 MnO₂ + 3 Br₂ + 4 H₂O2 MnO₄⁻ + 6 I⁻ + 8 H⁺ → 2 MnO₂ + 3 I₂ + 4 H₂ONo reaction2 Fe³⁺ + 2 I⁻ → 2 Fe²⁺ + I₂

What are the reactions occurring in the tubes?

The reactions occurring in the tubes are redox reactions.

Based on the table the equations of reaction are as follows:

2 MnO₄⁻ + 6 Br⁻ + 8 H⁺ → 2 MnO₂ + 3 Br₂ + 4 H₂O2 MnO₄⁻ + 6 I⁻ + 8 H⁺ → 2 MnO₂ + 3 I₂ + 4 H₂ONo reaction2 Fe³⁺ + 2 I⁻ → 2 Fe²⁺ + I₂

In conclusion, redox reaction are reactions in which electrons are transferred.

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