- #1
EzaMoo
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Homework Statement
A cylinder 1.00 m tall with an inside diameter of 0.120 m is used to hold propane gas (molar mass: 44.1 g.mol-1) for use in a barbeque. It is initially filled with a gas until the gauge pressure is 1.30 x 10^7 Pa and the temperature is 22.0⁰C. The temperature of the gas remains constant as it is partially emptied out of the tank, until the gauge pressure is 2.50 x 10^5 Pa. Calculate the mass of propane that has been used.
Homework Equations
1.. pV = nRT
2.. p1V1 / T1 = p2V2 / T2
The Attempt at a Solution
I am really wrong here but just need a guiding hand...
The volume of the cylinder is 0.11309733m^3
From Eq 1 I get the number of moles = 60 then total mass = 60 x 44.1 = 2643.64g
Then did this again for pressure 2 (2.5 x 10^5 Pa) to get = 50.84g
Difference being 2592.8g of gas used but this seems large.
I then looked at Eq 2 and I got V2 = 0.588m^3
Not really sure where to go with that...