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Chemistry · May / June 2024 · Paper 11 · Question 2

5070Elements, compounds and mixtures

A sample of substance X contains iron and sulfur only. [A_r: Fe, 56; S, 32] In which row is it possible for both statements about X to be correct?

  1. Astatement 1: X is a mixture with the ratio 4 : 7 by mass of iron and sulfur; statement 2: X is a compound with the ratio 4 : 7 by mass of iron and sulfur
  2. Bstatement 1: X is a mixture with the ratio 7 : 4 by mass of iron and sulfur; statement 2: X is a compound with the ratio 7 : 4 by mass of iron and sulfur
  3. Cstatement 1: X is a mixture with the formula FeS; statement 2: X is a compound with the formula FeS
  4. Dstatement 1: X is a mixture with the formula FeSO4; statement 2: X is a compound with the formula FeSO4

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Correct answer: B. statement 1: X is a mixture with the ratio 7 : 4 by mass of iron and sulfur; statement 2: X is a compound with the ratio 7 : 4 by mass of iron and sulfur

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