The propane fuel (C3H8) used in gas barbecues burns according to the following equation: C3H8(g)+5O2(g)3CO2(g)+4H2O(g) Hrxn=2044kJ If a pork roast...

The propane fuel (C3H8) used in gas barbecues burns according to the following equation: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)  ΔH∘rxn=−2044kJ

If a pork roast must absorb 2.6×103kJ to fully cook, and if only 10.% of the heat produced by the barbecue is actually absorbed by the roast, what mass of CO2 is emitted into the atmosphere during the grilling of the pork roast?

answer supposed to be in grams