Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way. luciferase can test for the presence of life. The coupled reactions are = oxyluciferin + light AMP+ PPI luciferin + Og АТР Given that for the coupled reaction, A,G(278K) = -7.70kJ mol1, and for the hydrolysis of ATP to AMP, A,G(278K) = -31.6 kJ mol-1, what is K for the first reaction at 278 K ? Express your answer numerically. • View Available Hint(s) Temglates Symbols undo ragio feset keyboard shortcuts Help K = 8.79 • 10 8

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Chapter1: Chemical Foundations
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Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way. luciferase can
test for the presence of life. The coupled reactions are
luciferin + Og = oxyluciferin + light
= AMP + PP
АТР
Given that for the coupled reaction, A,G(278K) = -7.70kJ mol, and for the hydrolysis of ATP to AMP, A,G(278K) = -31.6 kJ mol-1, what is K for the first reaction at 278 K ?
Express your answer numerically.
> View Available Hint(s)
Temglates Symbols undo rado
keyboard shortouts Help
K = 8.79 • 10-8
Transcribed Image Text:Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way. luciferase can test for the presence of life. The coupled reactions are luciferin + Og = oxyluciferin + light = AMP + PP АТР Given that for the coupled reaction, A,G(278K) = -7.70kJ mol, and for the hydrolysis of ATP to AMP, A,G(278K) = -31.6 kJ mol-1, what is K for the first reaction at 278 K ? Express your answer numerically. > View Available Hint(s) Temglates Symbols undo rado keyboard shortouts Help K = 8.79 • 10-8
The chemical reaction that causes chromium to corrode in air is given by
4Cr(s) + 302(g)–+2Cr201(s)
and
Part A
AH° =
2256 kJ mol1
What is the standard Gibbs energy change for this reaction? Assume the commonly used standard reference temperature of 298 K
A,S° =
-549.1 JK- nol
Express your answer as an integer and include the appropriate units.
> View Available Hint(s)
Tempjetes Symbols undo rego Teset keyboard shortcuts Help
kJ
A,G° (298 K) = 214.95
mol
Transcribed Image Text:The chemical reaction that causes chromium to corrode in air is given by 4Cr(s) + 302(g)–+2Cr201(s) and Part A AH° = 2256 kJ mol1 What is the standard Gibbs energy change for this reaction? Assume the commonly used standard reference temperature of 298 K A,S° = -549.1 JK- nol Express your answer as an integer and include the appropriate units. > View Available Hint(s) Tempjetes Symbols undo rego Teset keyboard shortcuts Help kJ A,G° (298 K) = 214.95 mol
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