Eric M. answered • 03/12/15

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Although the ideal gas law falls apart at higher pressures (like 45 atm!), you are not given the parameters to use van der Waals's gas law.*

Use PV = nRT, then, but you might state that you're assuming the compressed gas behaves like an ideal gas. Convert to liters while you're at it, since your volume is going to increase almost 50-fold. Since nRT is a constant here, you have

P

_{1}V_{1}= P_{2}V_{2. }You know all but V_{2}, so solve for that and plug in the numbers you've been given.Eric M.

McMinnville OR

*This equation accounts for the actual size of the gas molecules, which becomes significant at high pressures, and also has a correction term to account for the slight attraction between gas molecules (which helps them condense into liquids at the right temperature/pressure conditions).