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kumpel [21]
3 years ago
5

2 points

Physics
2 answers:
yawa3891 [41]3 years ago
8 0
The combustion of methane or octane is exothermic; it releases energy. CH4 + 2 O2 → CO2 + 2 H2O + energy The energies of the products are lower than the energiies of the reactants.
Travka [436]3 years ago
3 0
The one up top is most definitely the right answer
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Explanation:

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