Calculate the percentage of sulphur in ammonium sulphate: [N = 14, H =1, S=32, O =16, ]
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Answer:
21% or 21.2% exact
Explanation:
molar mass of ammonium sulphate (NH4)2SO4 is:
=2[14+1(4)]+32+(16×4)] (Atomic masses are given in the question)
=132g/mol
For every ammonium ion, there is 1 nitrogen atom NH4+.
Therefore,
% composition of nitrogen=2×14/132
=21.2%
Therefore, for every 100g of ammonium sulphate contains 21.2g of nitrogen.
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