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The Initial Concentration of Reactant in a First- Order Reaction

Question 84

Multiple Choice

The initial concentration of reactant in a first- order reaction is 0.27 M. The rate constant for the reaction is 0.75 s- 1. What is the concentration (mol/L) of reactant after 1.5 s?


A) 1.7
B) 2.0 × 10- 2
C) 3.8
D) 0.135
E) 8.8 × 10- 2

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