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O-LevelChemistryStoichiometry5070/11 · Oct/Nov 2021 · Q251 Mark

In order to decide which would be the better nitrogenous fertiliser, a student calculates the percentage by mass of nitrogen in both ammonium sulfate and ammonium nitrate. Which row gives the correct results?

A10.6 17.5
B10.6 35.0
C21.2 35.0
D21.2 17.5

✓ Correct answer

C: 21.2 35.0

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About this question

Topic
Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2021 Paper 1 Variant 1, question 25.

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