You will learn how to solve #24 using the Combined Gas Law and its set variables - P1V1/n1T1 = P2V2/n2T2 . T must always be K, but the only requirements for the other 3 variables is that the unit of measure for P1, V1, n1 and T1 must be the same as the units of measure for P2, V2, n2 and T2. In # 30 you must use PV = nRT - Pressure must be in atm, Volume must be in L, n stands for moles, R is a constant = 0.0821, Temperature must always be in K.
I don't see why you didn't just use the fact that STP means 22.4L per mole. You know you have 2.4mol, so
2.4mol x (22.4L / 1mol) = 53.8g
travelholic91 4 months ago