Waec Model Questions Vol1 2025 Chemistry Question 27
Practice objective / multiple choice question 27 from the 2025 Waec Model Questions Vol1 Chemistry examination.
In a two‑step synthesis, the following reactions occur: 1) 2 A + B → C (80 % yield) 2) C + 3 D → E + F (70 % yield) Molar masses: A = 50 g mol⁻¹, B = 80 g mol⁻¹, C = 120 g mol⁻¹, D = 40 g mol⁻¹, E = 150 g mol⁻¹. If 200 g of A, 150 g of B and 180 g of D are mixed, what mass of product E is obtained (assume 100 % recovery of E after the second step)?
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This is Waec Model Questions Vol1 2025 Chemistry Question 27. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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