In balanced CuO + NH3 giving Cu + N2 + H2O, what is the coefficient of H2O?
A2
B1
C4
D3
Answer & Solution
Correct answer: D. 3
Cu falls by 2 and N rises by 3 per atom, so 3 Cu and 2 N are needed, giving 3CuO + 2NH3 to 3Cu + N2 + 3H2O.
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