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3 years ago

I need help with this question please

Chemistry

1 answer:

elena-s [515]3 years ago

5 0

The answer is B.

This is because the temperature can affect the rate of reaction. The higher the temperature, the more the molecules move and collide with one another. If the temperature is decreased, the molecules will move slower and not collide as much.

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Consider the malate dehydrogenase reaction from the citric acid cycle. Given the listed concentrations, calculate the free energ

Ahat [919]

Answer: The Gibbs free energy of the reaction is 21.32 kJ/mol

Explanation:

The chemical equation follows:

$\text{Malate }+NAD^+\rightleftharpoons \text{Oxaloacetate }+NADH$

The equation used to Gibbs free energy of the reaction follows:

$\Delta G=\Delta G^o+RT\ln K_{eq}$

where,

$\Delta G$ = free energy of the reaction

$\Delta G^o$ = standard Gibbs free energy = 29.7 kJ/mol = 29700 J/mol (Conversion factor: 1 kJ = 1000 J)

R = Gas constant = 8.314J/K mol

T = Temperature = $37^oC=[273+37]K=310K$

$K_{eq}$ = Ratio of concentration of products and reactants = $\frac{\text{[Oxaloacetate]}[NADH]}{\text{[Malate]}[NAD^+]}$

$\text{[Oxaloacetate]}=0.130mM$

$[NADH]=2.0\times 10^2mM$

$\text{[Malate]}=1.37mM$

$[NAD^+]=490mM$

Putting values in above expression, we get:

$\Delta G=29700J/mol+(8.314J/K.mol\times 310K\times \ln (\frac{0.130\times 2.0\times 10^2}{1.37\times 490}))\\\\\Delta G=21320.7J/mol=21.32kJ/mol$

Hence, the Gibbs free energy of the reaction is 21.32 kJ/mol

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4. How many atoms are there in 4 moles of sulfur?

jekas [21]

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What are some non examples of temperature ?

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Some elements have a low degree of freedom and high intermolecular forces between its molecules. these elements are ________ at

Juli2301 [7.4K]

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4 years ago

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Which rock composed of a mineral that can be used for the production of cement?

Kamila [148]

I believe the answer is Limestone
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4 years ago