WAEC Chemistry 2014 Objective — Question 14
Question 14 of 50 from the West African Examinations Council (WAEC) Chemistry 2014 Objective paper, with the correct answer and a full explanation.
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A gaseous mixture contains 0.256g of hydrogen and 2.00g of oxygen. The mole ratio of hydrogen to oxygen in the mixture is (H=1.00, O=16.0)
- A. 1:1
- B. 2:1Correct
- C. 1:4
- D. 8:1
Explanation
Moles of H2 = 0.256/2 = 0.128 mol. Moles of O2 = 2.00/32 = 0.0625 mol. Ratio H2:O2 = 0.128/0.0625 = 2:1.
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