Neco Model Questions Vol1 2023 Physics Question 11
Practice objective / multiple choice question 11 from the 2023 Neco Model Questions Vol1 Physics examination.
A 200 g block of aluminum (specific heat \(0.900\ \text{J g}^{-1}\text{°C}^{-1}\)) at \(150^{\circ}\text{C}\) is placed into a calorimeter containing 300 g of water at \(20^{\circ}\text{C}\). The calorimeter has a heat capacity of \(100\ \text{J °C}^{-1}\). After the system reaches equilibrium the temperature is \(30^{\circ}\text{C}\) and 20 g of water has evaporated. Assuming all the heat for evaporation comes from the system, determine the latent heat of vaporisation of water in \(\text{J g}^{-1}\).
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About This Question
This is Neco Model Questions Vol1 2023 Physics Question 11. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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