Verified Answer :

elskywalker

a.CH4 2O2, so we have one C, 4 H and 4 O in each side of the equation, that is the correct balancing. Also this is a complete combustion as CO2 is produced instead of CO. Hope i helped!

Willchemistry

Chemical equation balanced:

CH₄ + 2 O₂ = CO₂ + 2 H₂O

type of reaction: Combustion 

Answer A

hope this helps!

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