Calculate the volume, in liters, of a 4.75 mol H2S(g) at 90 degrees C and 2.75 atm.

Please and thanks. I need this ASAP. Best answer gets all points!

The key is what is R
R = 0.08206 You can find all the information you need to know about R here

http://en.wikipedia.org/wiki/Gas_constan…

n = 4.75 mol
T = 90oC + 273 = 363oK
P = 2.75 atm
V = ???

PV = nRT
2.75 * V = 4.75 * 0.08206 * 363
V = 51.5 Liters.