The rate constant of a first-order decomposition reaction is 0.0147 s-1.If the initial concentration of reactant is 0.178 M,what is the concentration of reactant after 30.0 seconds?
A) 8.72 × 105 M
B) 0.0645 M
C) 0.115 M
D) 0.0785 M
E) 0.643 M
Correct Answer:
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