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Thermochemical Equations
Thermochemical Equations
8. Thermochemistry / Thermochemical Equations / Problem 5

The propane fuel (C3H8) used in gas barbeques burns according to the thermochemical equation:

C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g); ΔH°rxn = -2044 kJ

If a pork roast must absorb 1.6 x 103 kJ to be fully cooked, and if only 10% of the heat produced by the barbeque is absorbed by the roast, what mass of CO2 is emitted into the atmosphere during the grilling of the pork roast?

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