WAEC Chemistry 2019 Objective — Question 12
Question 12 of 50 from the West African Examinations Council (WAEC) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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Stoichiometry is based on the law of
- A. multiple proportion
- B. constant composition
- C. conservation of energy
- D. conservation of massCorrect
Explanation
Stoichiometric calculations rely on balanced equations, which in turn obey the law of conservation of mass (mass of reactants = mass of products).
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