All the substances listed below are fertilizers that contribute nitrogen to the soil. Which of these is the richest source of nitrogen on a mass percentage basis?

Urea,

(N H_{2})_{2} C O

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Ammonium nitrate,

N H_{4} N O_{3}

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Guanidine,

H N C (N H_{2})_{2}

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Ammonia,

N H_{3}

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Solution

The correct option is D Ammonia, $N H_{3}$
Compound %N
Urea $(N H_{2})_{2} C O$ $28 \times 100 / 60 = 46.67 %$
Ammonia $N H_{3}$ $14 \times 100 / 17 = 82.35 %$
Ammonium nitrate $N H_{4} N O_{3}$ $28 \times 100 / 80 = 35 %$
Guanidine $H N C (N H_{2})_{2}$ $42 \times 100 / 59 = 71.18 %$
Hence, ammonia is the richest source of nitrogen on a mass percentage basis.

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Similar questions

Calculate the percentage of Nitrogen in the fertilizer, Ammonium Nitrate $N H_{4} N O_{3}$

[H = 1, N = 14, O = 16]

The usefulness of a fertilizer depends upon percentage of nitrogen present in it. Find which of the following is a better fertilizer:
(a) ammonium nitrate [NH₄NO₃]
(b) ammonium phosphate [(NH₄)₃PO₄]
(N = 14, H = 1, O = 16, P = 31)

Calculate the percentage of nitrogen and oxygen in ammonium nitrate.

[Relative molecular mass of ammonium nitrate is 80, H = 1, N= 14, 0= 16],

Q. If the relative molecular mass of ammonium nitrate is 80, the percentage of nitrogen and oxygen in ammonium nitrate is:

[N = 14, H = 1, O = 16]

Q. Fertilizers are materials which supply only nitrogen to the soil.

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All the substances listed below are fertilizers that contribute nitrogen to the soil. Which of these is the richest source of nitrogen on a mass percentage basis?

The correct option is D Ammonia, NH3Compound %NUrea (NH2)2CO 28×100/60=46.67%Ammonia NH3 14×100/17=82.35%Ammonium nitrate NH4NO3 28×100/80=35%Guanidine HNC(NH2)2 42×100/59=71.18%Hence, ammonia is the richest source of nitrogen on a mass percentage basis.