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Chemistry · Oct / Nov 2020 · Paper 11 · Question 13

5070The mole and the Avogadro constant

Which contains the greatest mass of oxygen?

  1. A0.2 mol of aluminium nitrate, Al(NO3)3
  2. B0.3 mol of potassium sulfate, K2SO4
  3. C0.4 mol of sodium nitrate, NaNO3
  4. D0.5 mol of magnesium carbonate, MgCO3

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Correct answer: A. 0.2 mol of aluminium nitrate, Al(NO3)3

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