Can you determine the volume if you only know T, P, and m?

0 ⤊

Can you determine the volume if you only know T, P, and m?

Can you determine the volume of an ideal gas (PV = mRT) if you only know T,P, and m? Or do I need to find R for the particular substance?

2006-10-10 17:32:41 · 2 answers · asked by Sean H 2 in Science & Mathematics ➔ Physics

2 answers

You need to know the specific gas constant for the material to calculate the volume. The general form of the ideal gas law is PV=nRT, where n is the number of moles. Knowing the mass alone doesn't help because the density could be anything. The specific gas constant is the universal constant divided by the molar mass of the gas.

2006-10-10 17:49:18 · answer #1 · answered by injanier 7 · 0⤊ 0⤋

R = universal gas constant = 8.3145 J/mol K. This is the same for all ideal gases.

2006-10-11 07:37:32 · answer #2 · answered by Anonymous · 0⤊ 0⤋