Multiple Choice
A gas-phase decomposition is first-order with respect to the reactant, R. If the initial concentration of R is 1.0 × 10-4 mol L-1 and the rate constant k = 1.08 × 10-6 s-1, what concentration of R remains after 25 days?
A) 1.0 × 10-3 mol L-1
B) 1.0 × 10-4 mol L-1
C) 9.6 × 10-5 mol L-1
D) 4.3 × 10-5 mol L-1
E) 9.7 × 10-6 mol L-1
Correct Answer:

Verified
Correct Answer:
Verified
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