Characterize the NH3 substance according to the following plan 1) qualitative composition 2) quantitative composition 3) relative small and molar masses 4) mass fraction of each element 5) mass ratio of elements
NH3 – ammonia gas. Its characteristic:
1) qualitative composition – an ammonia molecule consists of 2 chemical elements – nitrogen (nitrone) and hydrogen (hydrogen);
2) quantitative composition – the ammonia molecule contains three hydrogen atoms and one nitrogen atom;
3) relative molecular weight – Mr (NH3) = 14 + 1 * 3 = 17, the molar mass is numerically equal to the relative molecular mass, that is, M = 17g / mol;
4) w (N) = 14/17 * 100% = 82%, w (N) = 100% – 82% = 18%
5) the ratio of the masses of the elements – 14: 3 = 4.7; one
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