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A. Mencari mol gas elpiji (C3H8)
n = g / Mr
= 8,8 gram / 44
= 0,2 mol
Berdasarkan reaksi, maka:
C3H8 + 5O2 --> 3CO2 + 4H2O
0,2 0,6
CO2 = koefisien dit (CO2) x mol diket (C3H8) / koefisien diket (C3H8)
= 3 x 0,2 / 1 --> 0,6 mol CO2
B. Mencari Volume CO2 saat STP
n = V / STP
V = 0,6 mol x 22,4
= 13,44 Liter
Oke?