Waec Model Questions Vol1 2019 Chemistry Question 21
Practice objective / multiple choice question 21 from the 2019 Waec Model Questions Vol1 Chemistry examination.
An ore sample weighing 150.0 g contains 30.0% by mass of the metal oxide M₂O₃ and the remainder is inert gangue. The ore is reduced with carbon at 1200 °C according to the reaction: M₂O₃ + 3 C → 2 M + 3 CO. After reduction, 12.5 g of CO gas is collected. (Atomic mass of the metal M = 55.0 u; atomic mass of O = 16.0 u; atomic mass of C = 12.0 u). Determine (a) the mass of metal obtained and (b) the overall percentage recovery of the metal relative to the theoretical maximum.
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About This Question
This is Waec Model Questions Vol1 2019 Chemistry Question 21. It is a objective / multiple choice question from the 2019 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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