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2 August, 09:05

What are the missing coefficents for the following equation? __N2+__H2->__NH3

3,1,2

1,3,2

1,1,2

1,3,3

+2
Answers (1)
  1. 2 August, 10:27
    0
    1, 3, 2

    Explanation:

    N2 + H2 → NH3

    I usually find that the best way to systematically balance an equation by inspection is to start with the most complicated-looking formula and then balance atoms in the order:

    All atoms other than O and H O H

    (a) The most complicated formula is NH3.

    (b) Balance N.

    We have 1 H in NH3, but 2 N on the left. We need 2 N on the right. Put a 1 in front of N2 and a 2 in front of NH3.

    1N2 + H2 → 2NH3

    (c) Balance H.

    We have fixed 6 H on the right, so we need 6 H on the left. Put a 3 in front of H2.

    1N2 + 3H2 → 2NH3

    The equation is now balanced, and the coefficients are 1, 3, 2.
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