Gce Model Questions Vol1 2020 Physics Question 29

Practice objective / multiple choice question 29 from the 2020 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2020 Physics Objective / Multiple Choice Medium Difficulty
Question 29 GCE_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • objective

A calorimeter of heat capacity \(50\ \text{J\,K}^{-1}\) contains \(300\ \text{g}\) of water at \(25^{\circ}\text{C}\). Into it is placed \(200\ \text{g}\) of ice initially at \(-10^{\circ}\text{C}\). The specific heat capacities are \(c_{\text{ice}} = 2.1\ \text{J\,g}^{-1}\text{K}^{-1}\) and \(c_{\text{water}} = 4.18\ \text{J\,g}^{-1}\text{K}^{-1}\); the latent heat of fusion of ice is \(334\ \text{J\,g}^{-1}\). Assuming no heat loss to the surroundings, determine the final equilibrium temperature and the mass of ice that remains unmelted.

Answer Options

A. 0 °C, 80 g ice remaining
Correct Answer B. 0 °C, 115 g ice remaining
C. -5 °C, 200 g ice remaining
D. 5 °C, 0 g ice remaining
Correct Answer
B
Correct Option:
0 °C, 115 g ice remaining

About This Question

This is Gce Model Questions Vol1 2020 Physics Question 29. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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