WAEC Chemistry 2020 Objective — Question 15
Question 15 of 50 from the West African Examinations Council (WAEC) Chemistry 2020 Objective paper, with the correct answer and a full explanation.
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A balanced chemical equation is based on the law of A. periodicity B. constant composition C. multiple proportion D. conservation of mass.
- A. periodicity
- B. constant composition
- C. multiple proportion
- D. conservation of massCorrect
Explanation
A balanced chemical equation is based on the law of conservation of mass.
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