Question:

How many grams of water are formed?

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When ammonium nitrate (NH4NO3) breaks down explosively, it forms nitrogen gas (N2), oxygen (O2), and water (H20). When 40 grams of ammonium nitrate explode, 14 grams of nitrogen and 8 grams of oxygen are formed. How many grams of water are formed?

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  1. The law of conservation of mass solves this problem.

    If you start off with 40 grams you have to end up with 40 grams in a chemical reaction.

    If you produce 14 grams of N2 and 8 grams of O2, then add them together to get 22 grams.  Subtract the 22 from 40 grams and that gives you 18 grams left which is the water.

    Easy.

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