Jawabanmu

2014-05-10T16:35:38+07:00
CxHy + (x+y/4) O2 -> xCO2 + y/2 H2O

mol CO2 = massa : Mr = 0,22 : 44= 5x10^-3 mol
mol H2O = massa:Mr = 0,045:18 = 2,5x10^-3

mol CO3:mol H2O = x : y/2
5x10^-3 : 2.5x10^-3 = x : y/2
x : y = 1 : 2
Jd, rmus empirisnya adlh CH