A backyard gas grill uses propane stored in a pressurized tank

CHEMISTRY · Multi-part · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A backyard gas grill uses propane stored in a pressurized tank. A cook burns

125\,\text{g}

of liquid propane, which vaporizes and reacts completely with the oxygen present in outdoor air at

298\,\text{K}

and

1.00\,\text{atm}

. Assume the combustion is complete and that the products behave ideally. (a) Write the balanced equation for the complete combustion of propane,

C_3H_8(g)

, in oxygen. (b) Calculate the volume, in liters, of

O_2(g)

required for the combustion of

125\,\text{g}

of propane at

298\,\text{K}

and

1.00\,\text{atm}

. Show all steps, including molar relationships from your balanced equation. (c) Determine the mass of

CO_2(g)

produced from the combustion described in part (b). Express your answer with the correct number of significant figures.