Question

calculate the mass for
(1) $0.5$ moles of oxygen $\left(O_2\right)$
(2) $0.5$ moles of ozone $\left(O_3\right)$

Answer 1

We have,

number of moles$n=\frac{Mass}{Molarmass}$

Now,

For $O_2$, the molar mass is 32 g/mol and number of moles $=0.5moles$ (Given)

$\therefore$ mass of $O_2=0.5\times 32=16g$

Similarily,

Molar mass of $O_3$ is 48 g/mol and number of moles $=0.5moles$

$\therefore$ Mass of $O_3=0.5\times 48=24g$