KVPY SA Exam 2015 Question Paper

Question : 31 of 80

Marks: +1, -0

CHEMISTRY

The percentage of nitrogen by mass in ammonium sulphate is closest to (atomic masses H = 1, N = 14, O = 16 , S = 32)

Solution:

% Nitrogen

= {\Wt \of N}/{\Wt \of\ (NH_4)_2SO_4}

N=28/132×100

= 21.21%

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