Question

A small cylinder of helium gas used for filling balloons has a volume of 2.85L and a pressure of 13300kPa at 25 ∘C.How many balloons can you fill if each one has a volume of 1.50L and a pressure of 1.26atm at 25 ∘C?

Answer 1

Use PV = nRT and solve for n = number of mols in the cylinder. Do the same and solve for n in the smaller balloons. Then determine how many can be filled.