Question

Apabila di ukur dengan suhu 273 K dan tekanan 76 cmHg, massa 2,24 L gas metana (CH4) adalah.....gram (Ar:C=12,N=1)

Answer 1

T = 273 K = 0°C
P = 76 cmHg = 1 atm
V = 2,24 liter
Mr CH4 = 16
(T=0°C,P=1atm ) STP

mol CH4 = 2,24 liter / 22,4 liter/mol = 0,1 mol
massa CH4 = 0,1 mol x 16 gr/mol = 1,6 gram