(a)[2]
What does the Avogadro constant mean?
(b)
Argon-40 ($^{40}_{18}\text{Ar}$) may be taken to behave 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:
(b(i))[1]
amount, measured in mol.
(b(ii))[2]
pressure to be determined.
(b(iii))[3]
root-mean-square (r.m.s.) speed of an argon atom.