Waec Model Questions Vol1 2021 Chemistry Question 5
Practice objective / multiple choice question 5 from the 2021 Waec Model Questions Vol1 Chemistry examination.
The diagram shows a sealed eudiometer tube containing 50.0 mL of water at 25 °C. A solid sample of MX₂ (unknown metal M, mass 3.00 g) reacts with excess HCl gas inside the tube, producing a gas that displaces the water. The volume of gas collected at the top of the tube is 250.0 mL at the same temperature and pressure. The water‑vapour pressure at 25 °C is 23.8 mm Hg. Using the information from the diagram, determine the atomic mass of metal M (in g·mol⁻¹).
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About This Question
This is Waec Model Questions Vol1 2021 Chemistry Question 5. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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