The nitrogen content of urea is: (in %) | vedclass

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(C) The chemical formula of urea is $NH_2CONH_2$. To calculate the percentage of nitrogen,we first find the molar mass of urea: $C = 12, H = 4, N = 28

Vedclass · Accepted Answer

$46$

Vedclass · Answer

(C) The chemical formula of urea is $NH_2CONH_2$. To calculate the percentage of nitrogen,we first find the molar mass of urea: $C = 12, H = 4, N = 28, O = 16$. Total molar mass = $12 + 4 + 28 + 16 = 60 	ext{ g/mol}$. The mass of nitrogen in one mole of urea is $28 	ext{ g}$. Percentage of nitrogen = $(28 / 60) 	imes 100 \approx 46.66\%$. Therefore,the nitrogen content is approximately $46\%$.

Column $I$	Column $II$
$(a)$ Fructose	$(p)$ Respiratory substrate
$(b)$ Glucose	$(q)$ Found in fruit juices
$(c)$ Starch	$(r)$ Responsible for sweetness of milk
$(d)$ Galactose	$(s)$ Stored food in plants

The nitrogen content of urea is: (in $\%$)

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