At 25.0°C, a sample of Xe gas occupies 513 mL in a piston-cylider apparatus when the external pressure is 885 torr. At what pressure (torr) will its volume become 623 mL if the temperature does not change? Enter your answer in decimal format with two decimal places. Do not enter units with your answer.

sup bro, im dumb, but this is what i found xd

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option c: 1605.1 kj

the balanced chemical reaction for combustion of methane is as follows:

here, enthalpy formation of is -74.7 kj/mol, 0 kj/mol, -393.5 kj/mol and -241.82 kj/mol respectively.

the heat released or can be calculated as follow:

putting the values,

thus, heat released by combustion of 1 mol of methane is 802.54 kj/mol. thus, for 2 mol, heat released will be:

therefore, heat released by the combustion of 2 mol of methane is 1605.1 kj.