Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. (b) One mole of N2 will produce two moles of NH3. (c) One molecule of nitrogen requires three molecules of hydrogen for complete reaction.A. 2CO + 2NO → 2CO2 + N2 is a balanced equation as the number of carbon, oxygen, and nitrogen atoms are same on both sides. B. 6CO2 + 6H2O → C6H12O6 + O2 is an imbalanced equation as oxygen atoms are not balanced here. C. H2CO3 → H2O + CO2 is a balanced equation as same number of hydrogen, carbon, and oxygen are present on both sides.

it's a redox reaction, you can balance this equation by using the change oxidation numbers of some elements (normally with 2 elements) in this case, u can see the oxidation number of N in NH3 is -3 and N in N2 is 0 => changed and the oxidation of O in O2 is 0 and O in H2O is -1 1 x..............2N(-3) => 2N(0) + 6e

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