A 3.28 mol sample of Kr has a volume of 319 mL. How many moles of Kr are in a 4.78 L sample at the same temperature and pressure?

Answer 1

At constant temperature and pressure the volume is proportional to the number of moles (See Avogadro).

3.28 mol / 319 ml = 4.78 mols / x m

x = 465 mls