Chapter 8, Problem 97E

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

$\begin{array}{l}{\text{C}}_3{\text{H}}_8\left(g\right)+5{\text{ O}}_2\left(g\right)\to 3{\text{CO}}_2\left(g\right)+4{\text{H}}_2\text{O}\left(g\right)\Delta H_{\text{rxn}}=-2044\text{kJ}\\ \end{array}$

If a pork roast must absorb $1.6\times {10}^3\text{kJ}$

kJ to fully cook, and if only 10% of the heat produced by the barbecue is absorbed by the roast, what mass ${\text{CO}}_2$ of is emitted into the atmosphere during the grilling of the pork roast?