Calculate the percentage by mass of nitrogen in calcium trioxonitrate (V). [Ca = 40, N = 14, O = 16]

Assessment: JAMB UTME - Chemistry - 2010 Subject: Chemistry

Question 1 Report

Calculate the percentage by mass of nitrogen in calcium trioxonitrate (V).
[Ca = 40, N = 14, O = 16]

8.5%

13.1%

17.1%

27.6%

Answer Details

Calcium = 40 × 1 = 40
Nitrogen = 14 × 1= 14
Oxygen = 3 × 16 = 48
40 + 14 + 48 = 102
% by mass of Nitrogen = 14 ÷ 102 × 100 = 13.7%

Explanation provided by Dr. Chuma Odachi

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