Question

Calculate the mass of the following
i) 0.5 moles of $N_2$ gas
ii) 0.5 moles of N atom

Answer 1

$\left(i\right)$ Mass of $N_2=$ Moles of $N_2\times$ Molecular weight of $N_2=0.5\times 28=14$ $g$

$\left(ii\right)$ Mass of $N-$ atom $=$ Moles of $N-$ atom $\times$ Molecular weight of $N-$ atom $=0.5\times 14=7$ $g$