Question

Help pls: https://snipboard.io/rsicLA.jpg

Answer 1

two things:

1. combustion ---> so oxygen will be one of the reactants
2. of an inorganic substance ---> so the other reactant will be something *without* carbon

based on those two facts, try to see which reaction qualifies

Answer 2

reaction 3 doesn't have oxygen as a reactant, so it's not combustion, eliminate reaction 3

between reactions 1, 2, and 4 - looking at the non-oxygen reactants, which one lacks carbon?

Answer 3

I think it is 2

Answer 4

good

Answer 5

I say this because 1 is a combustion reaction but an organic substance

Answer 6

No wait 3 is not a combustion reaction

Answer 7

4 is a combustion reaction but an organic substance