Calculate the molecular weight of the following.

${\mathrm{PCl}}_5$.

Calculate the molecular weight of the following.

$H_2{O}_2$

Calculate the molecular weight of the following.

$S_8$.

Calculate the molecular weight of the following.

$\mathrm{HCl}$.

Calculate the molecular weight of the following.

${\mathrm{NH}}_3$.

Calculate the mass of the following-

$5 moles$ of ammonia.

Calculate the mass of the following-

Calculate the mass of the following-

$= 1.50 \mathrm{moles} {\mathrm{Na}}^{+}$ ion.

Calculate the mass of the following-

$0.2 moles$ of oxygen atoms.