A 1.0 dm31.0\,\mathrm{dm^{3}}1.0dm3 sample of neon and a 1.0 dm31.0\,\mathrm{dm^{3}}1.0dm3 sample of fluorine are both measured at room temperature and pressure.
(relative atomic masses: Ne = 20, F = 19; 1 mol of any gas occupies 24 dm324\,\mathrm{dm^{3}}24dm3 at room temperature and pressure)
Which statement is correct?
The neon sample is heavier, because a neon atom is heavier than a fluorine atom
The samples have equal masses, because they contain equal numbers of atoms
The fluorine sample is heavier, and its mass is about 1.58 g1.58\,\mathrm{g}1.58g
The neon sample has a mass of 0.833 g0.833\,\mathrm{g}0.833g and the fluorine 0.792 g0.792\,\mathrm{g}0.792g
44 exam-style questions on Edexcel GCSE Chemistry 7.3 Group 0, covering 7.3.1 The noble gases. Each one has a worked solution and a mark scheme showing where the marks go.