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yaroslaw [1]
3 years ago
7

Cuo

Chemistry
1 answer:
yawa3891 [41]3 years ago
6 0

Explanation:

because there is 2 hydrogen atoms in the reactions side of the equation (you can tell because the H has a 2 in the subscript) you have to have 2 hydrogen atoms in the reactants side to help balance out the equation. and since the copper and oxygen atoms are already balanced there is no coefficient needed.

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