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Chemistry · May / June 2018 · Paper 11 · Question 12

5070The mole and the Avogadro constant

The relative formula masses of four compounds are given. A student has a 1.0 g sample of each compound. Which sample contains the highest number of moles of oxygen atoms?

  1. AAl2O3, 102
  2. BCuO, 80
  3. CH2SO4, 98
  4. DHNO3, 63

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Correct answer: D. HNO3, 63

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