The propane fuel (C3H8) used in gas barbecues burns according to the equation:C3H8(g) +

QUESTION:

The propane fuel (\(\mathrm{C}_{3} \mathrm{H}_{8}\)) used in gas barbecues burns according to the equation:

\(\mathrm{C}_{3} \mathrm{H}_{8}(g)+5 \mathrm{O}_{2}(g) \rightarrow 3 \mathrm{CO}_{2}(g)+4 \mathrm{H}_{2} \mathrm{O}(g)\)

                                                    \(\Delta H_{r x n}=-2044 \mathrm{~kJ}\)

If a pork roast must absorb \(1.6 \times 10^{3} \mathrm{~kJ}\) to fully cook, and if only 10% of the heat produced by the barbecue is actually absorbed by the roast, what mass of \(\mathrm{CO}_{2}\) is emitted into the atmosphere during the grilling of the pork roast?

Equation Transcription:

Text Transcription:

C_3 H_8

C_3 H_8 (g) + 5 O_2 (g) right arrow 3 CO_2 (g) + 4 H_2 O(g)

Delta H_rxn = -2044 kJ

1.6 times 10^3 kJ

CO_2