Neco 2019 Chemistry Question 47

Practice objective / multiple choice question 47 from the 2019 Neco Chemistry examination.

Neco 2019 Chemistry Objective / Multiple Choice Medium Difficulty
Question 47 NECO • 2019 • CHEMISTRY • objective

A 5.00 g mixture of calcium carbonate (CaCO3) and sodium carbonate (Na2CO3) is heated strongly so that both carbonates decompose completely to their respective oxides, releasing CO2 gas. The total mass of CO2 collected is 2.10 g. Determine the mass percent of CaCO3 in the original mixture.

Answer Options

A. 25.6
B. 30.0
Correct Answer C. 20.1
D. 15.3
Correct Answer
C
Correct Option:
20.1

About This Question

This is Neco 2019 Chemistry Question 47. It is one of the objective questions from the 2019 Neco Chemistry examination.

Difficulty level: Medium .

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