The steel used to make structural beams in buildings is a mixture. what category best describes this type of mixture? heterogeneous mixture colloid suspension solution

Stainless steel is a homogeneous mixture because its particles do not settle when the mixture is allowed to stand.

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odesseyware chem is very confusing best of luck

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.