O-LevelChemistryStoichiometry5070/11 · Oct/Nov 2013 · Q131 Mark
Which statement about the four gases carbon dioxide, CO2, hydrogen, H2, oxygen, O2 and ozone, O3 is correct?
AOne mole of each gas occupies the same volume at a given temperature and pressure.
BOzone has the fastest rate of diffusion at a given temperature and pressure.
CThey are all denser than air.
DThey are all elements.
✓ Correct answer
A: One mole of each gas occupies the same volume at a given temperature and pressure.
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