Mass of propane used when tank pressure drops from 1.30×10⁷ to 2.50×10⁵ Pa

[pat666]

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

 

[Mapes]

Looks good to me.