This question requires the ideal gas equation PV = nRT where n = # of moles of the gas. The value of the gas constant R depends on the unit of pressure given /needed. Since the pressure is needed in atm the value for R = 0.0821 L.atm /mol.K .
Identify the value of all your parameters and substitute into the formula!
This gives: P=?; V= 5.00 L; n = 0.53125 mol [17.00/32.00] ; R = 0.0821 L.atm /mol.K T = 350 K
Using the formula, the answer obtained should be 3.05 atm
If you focus on the relationships/formulas learned in your lecture, these questions becomes much simpler with practice....
