There is a balloon filled with methane,CH4. If the mass of the methane is 68.34g, what is the volume of the balloon at 0.805 atm and a temperature of -10*C?

3 answers

PV=nRT
V= nRT/P n = moles= mass/molmassCH4
change temp in C to K
so what is the molar mass? i know that v= ? * .805/263K, but im stuck on this one???
Can't you calculate the molar mass of CH4. Look on the periodic table. Atomic mass C + 4*atomic mass H = molar mass CH4.