Waec Model Questions Vol1 2021 Physics Question 8
Practice objective / multiple choice question 8 from the 2021 Waec Model Questions Vol1 Physics examination.
A 150 g iron block (specific heat 0.45 J g⁻¹ °C⁻¹) initially at 200 °C is immersed in 200 g of water (specific heat 4.18 J g⁻¹ °C⁻¹) at 25 °C in an insulated container. (a) Find the equilibrium temperature of the system. (b) To raise the temperature of the mixture to 80 °C, steam at 100 °C is introduced and allowed to condense completely. Assuming the latent heat of vaporisation of water is 2260 J g⁻¹ and the specific heat of liquid water is 4.18 J g⁻¹ °C⁻¹, calculate the mass of steam required.
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About This Question
This is Waec Model Questions Vol1 2021 Physics Question 8. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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