 #1
greg_rack
Gold Member
 363
 79
 Homework Statement:

2.0kg of an ideal monoatomic gas(γ = 5/3) are contained inside a box of volume V=4.2m³.
Gas is at a pressure of 3.5bar.
Calculate sound's velocity through the gas
 Relevant Equations:

Speed of sound in a gas: ν=√(γkT/m)
IGE: pV=nRT
First of all I thought it was necessary to calculate the temperature(the only data missing for the formula) using the ideal gas equation(since I've already been given 'p' and 'V'), and plug it in the 'v' formula, but the problem immediately occurred when i tried to find out the number of moles(n), that I couldn't manage to find... and that's exactly where I got stuck.