WAEC Chemistry 2018 Objective — Question 13
Question 13 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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What is the mass of solute in 500cm³ moldm⁻³ H₂SO₄? [H=1.0, O=16.0, S=32.0]
- A. 0.4908
- B. 0.049
- C. 0.245Correct
- D. 0.245
Explanation
Volume = 500/1000 = 0.5dm³; concentration 0.005moldm⁻³ gives 0.0025mol; mass = 0.0025 × 98 = 0.245g.
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