If compound A reacts with B following first order kinetics with rate constant 2.011 × 10^-3 s^-1. The time taken by A (in seconds) to reduce from 7 g…

If compound A reacts with B following first order kinetics with rate constant $\displaystyle 2.011 \times 10^{-3} \mathrm{~s}^{-1}$. The time taken by A (in seconds) to reduce from $\displaystyle 7$ g to $\displaystyle 2$ g will be $\displaystyle \_\_\_\_$. (Nearest Integer) $\displaystyle [\log 5=0.698, \log 7=0.845, \log 2=0.301]$