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 a objective / multiple choice question from the 2021 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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