Question

Q.8. Which of the following compounds contains the highest percentage of nitrogen?
(Ca=40, N=14, O=16, C=12, H=1, S= 32)
a) Ca(NO3)2 b)CaCN2
c) (NH4)2SO4

Answer 1

Answer:

(NH4)2SO4 is a compound contains highest percentage of nitrogen.

Answer 2

Answer:

Ca(CN) 2 has highest percentage of Nitrogen.

Explanation:

Compound Whole mass

Ca(NO3) 2 - 40+2(14+48) = 164g

Ca(CN) 2 - 40+2(12+14) = 92g

(NH4) SO2 - 14+8+32+32= 86g

Compound Mass percentage of nitrogen

Ca(NO3)2 =28/164×100 = 17.07%

Ca(CN) 2 =28/92×100 = 30.43%

(NH4) SO2 =14/86×100 = 16.27%

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