It has 2 nitrogens. This is because there is 1 nitrogen in the ammonium, and there are two ammonium molecules.
<span>In order to separate salt from rock salt, first crush the salt rock into small pieces, put it in a container and add water. Stir until it dissolves. Pour the solution to a funnel lined with coffee filter. Heat the filtered water and the water will evaporate leaving salt behind.<span>
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Answer:
45 joules to calories= 10 (10.755258) calories
one substance becomes two new substances