Question

Which is the most accurate description of this chemical reaction?
CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g) + heat

The reactants have more energy than the products have, and the reaction most likely obeys the law of conservation of energy.

The products have more energy than the reactants have, and the reaction most likely obeys the law of conservation of energy.

The reactants have more energy than the products have, but the reaction does not obey the law of conservation of energy.
The products have more energy than the reactants have, but the reaction does not obey the law of conservation @aaronq

Answer 1

This is a combustion reaction, it is an exothermic reaction (releases heat).

Chemical reactions always need to obey the law of conservation of mass.

Answer 2

So it would be the first one?

Answer 3

@aaronq

Answer 4

Which would it be? The first or the second?

Answer 5

The first