The mass percentage of nitrogen in histamine | vedclass

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Question

(A) The molecular formula of histamine is $C_5H_9N_3$.The molar mass of histamine is $(5 	imes 12) + (9 	imes 1) + (3 	imes 14) = 60 + 9 + 42 = 111

Vedclass · Accepted Answer

$37.84$

Vedclass · Answer

(A) The molecular formula of histamine is $C_5H_9N_3$.The molar mass of histamine is $(5 	imes 12) + (9 	imes 1) + (3 	imes 14) = 60 + 9 + 42 = 111 \ g/mol$.The mass of nitrogen in one mole of histamine is $3 	imes 14 = 42 \ g$.The mass percentage of nitrogen is calculated as:$	ext{Mass } \% = (\frac{	ext{Mass of nitrogen}}{	ext{Molar mass of histamine}}) 	imes 100$$	ext{Mass } \% = (\frac{42}{111}) 	imes 100 = 37.8378 \% \approx 37.84 \%$.

The mass percentage of nitrogen in histamine is

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