A balloon containing 0.600 mole of SO2 gas has a volume of 275 mL at a certain temperature and pressure. What volume, in milliliters, would a 0.765 mole sample of SO2 gas occupy at the same temperature and pressure conditions?

Answer 1

The easy way to do this is to recognize that volume is proportional to mols of gas at the same T and P or
(n1/v1) = (n2/v2) but an equally easy, but more work is to assume some value for T (any convenient numbers will work) and use PV = nRT, substitute the numbers and solve for P. Then using that value for P and the assumed value for T, use PV = nRT, substitute those numbers and solve for the new volume. You should get the same answer either way. Post your work if you get stuck.