Chemistry · May / June 2024 · Paper 12 · Question 31
5070The mole and the Avogadro constant
Ammonium phosphate, (NH4)3PO4, may be used as a fertiliser. What is the percentage by mass of elements that improve plant growth in ammonium phosphate?
- A9
- B21
- C28
- D49
As printed in the paper
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Correct answer: D. 49
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