Water initially present in a state where molecules are far apart. During a chnge of state, its molecules slow down. Which change of state has most likely taken place?
A. From gas to a liquid
B. From a liquid to gas
C. From solid to liquid
D. From a gas to plasma

the objects have the same charge.

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.