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O-LevelChemistryStoichiometry5070/12 · Oct/Nov 2014 · Q131 Mark

Which fertiliser contains the greatest percentage by mass of nitrogen?

A(NH4)2HPO4, Mr = 132
B(NH4)2SO4, Mr = 132
CNH4NO3, Mr = 80
DCO(NH2)2, Mr = 60

✓ Correct answer

D: CO(NH2)2, Mr = 60

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About this question

Topic
Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2014 Paper 1 Variant 2, question 13.

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