WAEC Chemistry 2023 Objective — Question 36
Question 36 of 50 from the West African Examinations Council (WAEC) Chemistry 2023 Objective paper, with the correct answer and a full explanation.
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The relative molar mass of a gaseous hydrocarbon is 30. Determine its vapour density.
- A. 15Correct
- B. 30
- C. 60
- D. 45
Explanation
Vapour density = ½ × Relative molecular mass = ½ × 30 = 15.
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