Gas Laws Homework: Calculate Mass of Propane Used

AI Thread Summary
The discussion centers on a homework problem involving the calculation of the mass of propane used from a gas cylinder. The initial conditions include a gauge pressure of 1.30 x 10^7 Pa and a temperature of 22.0°C, with the final gauge pressure at 2.50 x 10^5 Pa. The ideal gas law equation, Pv=nRT, is applied to find the mass of propane. One participant calculated the mass of used propane to be 2592 grams and sought confirmation. The response indicated that the calculation appeared correct.
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Homework Statement


8. 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 107 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 105 Pa. Calculate the mass of propane that has been used.


Homework Equations


Pv=nRT


The Attempt at a Solution


Found the mass of the used propane to be 2592grams... Can someone please take a look and see if this is right... thanks
 
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