Waec Model Questions Vol1 2017 Geography Question 6
Practice objective / multiple choice question 6 from the 2017 Waec Model Questions Vol1 Geography examination.
A limestone consisting of pure calcite (CaCO₃) weighing 200 kg is mixed with 50 kg of silica (SiO₂) and heated so that the reaction CaCO₃ + SiO₂ → CaSiO₃ + CO₂ proceeds to completion. Using the molar masses CaCO₃ = 100.09 g mol⁻¹, SiO₂ = 60.08 g mol⁻¹ and CaSiO₃ = 116.16 g mol⁻¹, determine (i) the mass of wollastonite (CaSiO₃) formed and (ii) the mass of unreacted calcite remaining.
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About This Question
This is Waec Model Questions Vol1 2017 Geography Question 6. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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