(a)[2]
Explain what the Avogadro constant means.
(b(i))[1]
Argon-40 ($^{40}_{18}\text{Ar}$) can be treated as an ideal gas. A mass of $3.2\,\text{g}$ of argon-40 occupies a volume of $210\,\text{cm}^3$ at a temperature of $37\,^{\circ}\text{C}$. Determine, for this mass of argon-40 gas, the amount, in mol.
(b(ii))[2]
Determine, for this mass of argon-40 gas, the pressure.
(b(iii))[3]
Determine, for this mass of argon-40 gas, the root-mean-square (r.m.s.) speed of an argon atom.