Chemistrymedium · Past Paper
In the balanced equation $aH_2 + bO_2 \rightarrow cH_2O$, what is the sum of a+b+c?
A3
B4
C5
D6
✓ Correct Answer: C — 5
The balanced equation is $2H_2 + 1O_2 \rightarrow 2H_2O$. So, 2+1+2 = 5.
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