O-LevelChemistryStoichiometry5070/11 · Oct/Nov 2024 · Q291 Mark
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?
A% of the element in Na3PO4 that improves plant growth: 19, % of the element in NH4NO3 that improves plant growth: 18
B% of the element in Na3PO4 that improves plant growth: 19, % of the element in NH4NO3 that improves plant growth: 35
C% of the element in Na3PO4 that improves plant growth: 42, % of the element in NH4NO3 that improves plant growth: 18
D% of the element in Na3PO4 that improves plant growth: 42, % of the element in NH4NO3 that improves plant growth: 35
✓ Correct answer
B: % of the element in Na3PO4 that improves plant growth: 19, % of the element in NH4NO3 that improves plant growth: 35
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