x g of propane (C3H8) on combustion with 32 g of oxygen produces 26.4 g of CO2 and 14.4 g of H2O. The value of x is:
C3H8 + 5O2 → 3CO2 + 4H2O
xg 32g 26.4g 14.4 g
According to law of conservation of mass "mass is neither created nor destroyed during a chemical change"
x + 32 = 26.4 + 14.4
x = 8.8 g
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