The rate constant for a first order reaction is 4.606 $ \times $ 10-3 s-1. The time required to reduce 2.0 g of the reactant to 0.2 g is :

Question

The rate constant for a first order reaction is 4.606 $ \times $ 10^-3 s^-1. The time required to reduce 2.0 g of the reactant to 0.2 g is :

200 s