Chemistry 5070 · O Level · The mole and the Avogadro constant

The mole and the Avogadro constant — practice question

Hydrated copper(II) nitrate is represented by the formula $\text{Cu(NO}_3)_2 \cdot x\text{H}_2\text{O}$. Its mass is made up of $36.5\%$ water of crystallisation. Determine the value of $x$. [$A_r$: H, $1$; N, $14$; O, $16$; Cu, $64$]

  • A4
  • B5
  • C6
  • D7

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