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Vlada [557]
4 years ago
10

During a laboratory experiment, you discover that an enzyme-catalyzed reaction has a ∆G of -20 kcal/mol. If you double the amoun

t of enzyme in the reaction, what will be the ∆G for the new reaction?
Chemistry
1 answer:
Dennis_Churaev [7]4 years ago
7 0

Answer:

dG will be the same -20 kcal/mol

Explanation:

The dG can be expressed in terms of the G(products) - G(reactants). If the amount of enzyme is doubled the Gibbs energy of the reactants and products will be the same, so the substraction dG has the same value

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(04.05 HC)
Tanzania [10]

Part 1;

The answer is; Carbon dioxide. Approximately 0.8% of the atmosphere is composed of carbon dioxide. It is in the gaseous phase.


Part 2;

The answer is; Combustion. Human activity of burning fossil fuels increases the carbon dioxide in the atmosphere. This has a secondary consequence of warming up the planet because carbon dioxide is a greenhouse gas.


Part 3:

Carbon is conserved in the cycles mostly in plants. Plants take up carbon dioxide in photosynthesis and make organic compounds (carbohydrates). Therefore first acts as carbon sinks. Even the fossils fuels that we burn come from plankton that is major carbon sinks too.


Part 4;

Carbon dioxide in the atmosphere is created by several processes including combustion and respiration. All living things respire out carbon dioxide. Plants take up this carbon dioxide and sequester it. When animals feed on plants they release part of this carbon back to the atmosphere through respiration


6 0
3 years ago
175 ml of a 1.6 m solution of kcl is diluted to a new volume of 1.0 l. what is the new concentration of the solution? (3 points)
djyliett [7]

175 ml of a 1.6 m solution of KCl is diluted to a new volume of 1.0 L. The new concentration of the solution is 0.28 m KCl.

Hence, Option (B) is correct answer.

<h3>What is Concentration ?</h3>

Concentration is defined as the measure of how much substance there is mixed with another substance.

<h3>How to find the concentration ?</h3>

To find the concentration use the dilution formula

C₁V₁ = C₂V₂

where,

C₁ = Concentration of starting solution

C₂ = Concentration of final solution

V₁ = Volume of the starting solution

V₂ = Volume of the final solution

Now put the values in above formula we get

C₁V₁ = C₂V₂

1.6 × 0.175 = C₂ × 1.0

0.28 = C₂ × 1.0

C₂ = 0.28

Thus from the above conclusion we can say that 175 ml of a 1.6 m solution of KCl is diluted to a new volume of 1.0 L. The new concentration of the solution is 0.28 m KCl.

Hence, Option (B) is correct answer.

Learn more about the Concentration here: brainly.com/question/17206790

#SPJ1

3 0
2 years ago
Chemistry help. I need help with an assignment due in 20 minutes.
jasenka [17]

Answer:

wheres the pic of it?

Explanation:

4 0
3 years ago
If you needed to make 100 mL of a 0.2 M fruit drink solution from the 1.0 M fruit drink solution, how would you do it? (Hint: Us
Studentka2010 [4]

Answer: We take 20 ml of 1.0 M fruit drink and add 80 ml of water to get 100 ml of 0.2 M solution.

Explanation:

According to the neutralization law,

M_1V_1=M_2V_2

where,

M_1 = molarity of stock solution = 0.2 M

V_1 = volume of stock solution = 100 ml

M_2 = molarity of resulting solution = 1.0 M

V_2 = volume of resulting solution = ?

Now put all the given values in the above law, we get the volume of resulting solution.

(0.2M)\times 100=(1.0M)\times (V_2)

V_2=20ml

Therefore, the volume of 1.0 M required is 20 ml.

We take 20 ml of 1.0 M fruit drink and add 80 ml of water to get 100 ml of 0.2 M solution.

7 0
3 years ago
How many moles of gas at 58° C does it take to fill a 1.75 L flask to a pressure of 12.5 kPa? Please help I will give brainliest
marin [14]

Answer:

0.008 moles of gas are present

Explanation:

Given data:

Volume of gas = 1.75 L

Number of moles =  ?

Temperature of gas = 58°C

Pressure of gas = 12.5 KPa

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

58+273 = 331 K

Pressure = 12.5/101 = 0.12 atm

by putting values in formula:

0.12 atm× 1.75 L = n× 0.0821 atm.L/ mol.K   ×331 K

0.21 atm.L = n× 27.17atm.L/ mol

n = 0.21 atm.L /27.17atm.L/ mol

n = 0.008 mol

3 0
3 years ago
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