Neco 2021 Chemistry Question 49
Practice objective / multiple choice question 49 from the 2021 Neco Chemistry examination.
When 20.0 g of a mixture containing calcium carbonate (\( \mathrm{CaCO_3} \)) and magnesium carbonate (\( \mathrm{MgCO_3} \)) is treated with excess HCl, 9.0 g of CO₂ gas is collected at STP. Determine the mass percent of \( \mathrm{CaCO_3} \) in the original mixture.
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About This Question
This is Neco 2021 Chemistry Question 49. It is one of the objective questions from the 2021 Neco Chemistry examination.
Difficulty level: Medium .
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