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WAEC Chemistry 2015 Theory — Question 21

Question 21 of 49 from the West African Examinations Council (WAEC) Chemistry 2015 Theory paper, with the correct answer and a full explanation.

2(c)(i). A sample of carbon is burnt at a rate of 0.50 g per second for 30 minutes to generate heat. Write a balanced equation for the reaction.

Model answer

C(s) + O₂(g) → CO₂(g)

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