Waec Model Questions Vol1 2017 Chemistry Question 19
Practice objective / multiple choice question 19 from the 2017 Waec Model Questions Vol1 Chemistry examination.
A 2.00 g sample of a substance with molar mass 100 g mol⁻¹ is heated from 25 °C to 150 °C. Its melting point is 30 °C (ΔH_fus = 6.0 kJ mol⁻¹) and its boiling point is 120 °C (ΔH_vap = 30 kJ mol⁻¹). The specific heat capacities are: solid 0.5 J g⁻¹ K⁻¹, liquid 0.8 J g⁻¹ K⁻¹, gas 1.0 J g⁻¹ K⁻¹. Calculate the total heat absorbed for the entire heating process.
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About This Question
This is Waec Model Questions Vol1 2017 Chemistry Question 19. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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