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Answer:
Explanation:
Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1." NH3 + O2 → N2 + H2O
2NH3 + 3/2O2 → N2 + 3H2O
you cannot have 3/2 of a molecules, so multiply all coefficients by "2"
4NH3 + 3O2 → 2N2+ 6H2O
there are 4 N on each side, 12 H on each side, 6 O on each side
the equation is balanced!
when balancing equations, you cannot change the subscripts in the compounds, you can only show with coefficients haw may molecules yous have