(Solved): Determine the mass of CO2 produced by burning enough of methane to produce 2.50102kJ of heat ...

Determine the mass of ${\mathrm{CO}}_2$ produced by burning enough of methane to produce $2.50\times 10^2\mathrm{kJ}$ of heat. $\begin{array}{l}{\mathrm{CH}}_4(g)+2{\mathrm{O}}_2(g)?{\mathrm{CO}}_2(g)+2{\mathrm{H}}_2\mathrm{O}(g)\\ ?H_{\text{rxn }}^{?}=?802.3\mathrm{kJ}\end{array}$ Express your answer using three significant figures. Part B Determine the mass of ${\mathrm{CO}}_2$ produced by burning enough of propane to produce $2.50\times 10^2\mathrm{kJ}$ of heat. $\begin{array}{l}{\mathrm{C}}_3{\mathrm{H}}_5(g)+5{\mathrm{O}}_2(g)?3{\mathrm{CO}}_2(g)+4{\mathrm{H}}_2\mathrm{O}(g)\\ ?H_{rm}^{?}=?2043\mathrm{kJ}\end{array}$ Express your answer using three significant figures. Determine the mass of ${\mathrm{CO}}_2$ produced by burning enough of octane to produce $2.50\times 10^2\mathrm{kJ}$ of heat. $\begin{array}{l}{\mathrm{C}}_8{\mathrm{H}}_{18}(l)+25/2{\mathrm{O}}_2(g)?8{\mathrm{CO}}_2(g)+9{\mathrm{H}}_2\mathrm{O}(g)\\ ?H_{\mathrm{rxn}}^{?}=?5074.1\mathrm{kJ}\end{array}$ Express your answer using three significant figures.