Chemistry 0620 · IGCSE · Formulae

Formulae — practice question

An NPK fertiliser is produced by combining two compounds. The first compound has the formula $(\text{NH}_4)_2\text{HPO}_4$. State the formula of the second compound.

  • A$\text{CaCO}_3$
  • B$\text{KNO}_3$
  • C$\text{NaCl}$
  • D$(\text{NH}_4)_2\text{SO}_4$

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