Given that 0.403 g of nitrogen combines with 0.0864 g of hydrogen and H is assigned an atomic mass of 1.00 amu calculate the atomic mass of nitrogen based on the formula NH.

Question

Chemistry

Cecilia Maxwell

19 March, 11:25

Given that 0.403 g of nitrogen combines with 0.0864 g of hydrogen and H is assigned an atomic mass of 1.00 amu calculate the atomic mass of nitrogen based on the formula NH.

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Williams · Answer 1

If the molecular formula is NH, then it means there are 1 molecule of nitrogen every 1 molecule of hydrogen. In this case, the hydrogen atomic mass is 1 and its weight is 0.0864 grams. The nitrogen weight 0.403 grams and we need to find the atomic mass. The calculation should be:

(1 / 0.0864 gram) * 0.403 = 4.66

I'm not sure that there is NH molecule. The molecular weight of nitrogen should be 14 so the question might be wrong. If the reaction is N2 + 3 H2 → 2 NH3

Then the answer is: (3 / 0.0864 gram) * 0.403 = 14