Four gas cylinders are stored at identical temperature and pressure conditions
CHEMISTRY · Multi-part · A Level · Chemistry · Amount of substance · Amount of substance
Problem
Four gas cylinders are stored at identical temperature and pressure conditions. The masses and chemical identities of the gases in the cylinders are shown.
• 32.0 g of O₂ (g)
• 34.0 g of H₂O₂ (g)
• 40.0 g of Ne (g)
• 80.0 g of Br₂ (g)
(a) Determine the number of moles of gas present in each cylinder. Express each answer to three significant figures.
(b) Identify any pair of cylinders that contain the same number of molecules. Justify your choice.
(c) Among the cylinders listed, which one contains the greatest number of hydrogen atoms? Explain in detail.