Neco Model Questions Vol1 2018 Physics Question 21
Practice objective / multiple choice question 21 from the 2018 Neco Model Questions Vol1 Physics examination.
A 150 g sample of water at \(20^{\circ}\text{C}\) is placed in a calorimeter whose heat capacity is \(50\ \text{J/}^{\circ}\text{C}\). An aluminum rod of unknown mass \(m\) (specific heat \(c_{\text{Al}} = 0.900\ \text{J g}^{-1}\!^{\circ}\text{C}^{-1}\)) is heated to \(200^{\circ}\text{C}\) and then quickly transferred into the water. Assuming no heat loss to the surroundings, the final equilibrium temperature of the system is \(30^{\circ}\text{C}\). Determine the mass \(m\) of the aluminum rod in grams (to two decimal places).
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About This Question
This is Neco Model Questions Vol1 2018 Physics Question 21. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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