Chemistry · Oct / Nov 2024 · Paper 11 · Question 29
5070The mole and the Avogadro constant
Sodium phosphate, Na3PO4, and ammonium nitrate, NH4NO3, are both used as fertilisers. Which row shows the correct percentage by mass of the element in each compound that improves plant growth?
- A19 | 18
- B19 | 35
- C42 | 18
- D42 | 35
As printed in the paper
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Correct answer: B. 19 | 35
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