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 * 103 kJ to fully cook, and if only
10% of the heat produced by the barbeque is actually absorbed
by the roast, what mass of CO2 is emitted into the atmosphere
during the grilling of the pork roast?
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Master Thermochemical Equations with a bite sized video explanation from Jules Bruno