Question

How much time would it take to distribute one Avogadro number of wheat grains, if ${10}^{10}$ grains are distributed each second?

Answer 1

$1$ Avogrado no. of wheat grains contains $6.02\times {10}^{23}$ grains.

${10}^{10}$ grains distributed in $1$ second.

$\therefore$ Time required to distribute $1$ $N_A$ wheat grains $=\frac{6.02\times {10}^{23}}{{10}^{10}}=6.02\times {10}^{13}$ seconds.