JEE MAIN - Chemistry (2020 - 9th January Morning Slot - No. 11)
The mass percentage of nitrogen in histamine is _____.
Answer
37.80to38.20
Explanation
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Chemical formula of Histamine : C5H9N3
$$ \therefore $$ % by mas of N = $${{3 \times 14} \over {5 \times 12 + 1 \times 9 + 3 \times 14}} \times 100$$
= $${{42} \over {111}} \times 100$$
= 37.84%
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