Question

plz guys answer this in detail

Answer 1

1 mole=6.023*10^22
0.1 mole=6.023*10^21

Answer 2

since no of molecule is given as (number of moles)[(6.022)(10^23)
$6.022 \times {10}^{23} \times 0.1 \\ that \: is \\ 6.022 \times {10}^{22}$