Calculate ΔHo for this reaction....

C3H8(g) + 5 O2 (g) → 3CO2 (g) + 4 H2O (l)

Calculate ΔHo for this reaction, given these values of ΔHo for formation: C3H8(g) –103.8 kJ mol-1  CO2 (g) –393.5 kJ mol-1  H2O (l) –285.8 kJ mol-1

[(4*-285.8)+(3*-393.5)] - [-103.8]

-2220 kJ