If a burning candle is covered by a large glass beaker, the flame will go out. how does the beaker affect the conditions described by the fire triangle? a. it removes oxygen from the flame. b. it limits the heat available for the flame to continue to burn under the glass beaker. c. it prevents more oxygen from reaching the flame once the existing oxygen is used up. d. it limits the fuel available to the flame

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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.