Neco Model Questions Vol1 2023 Physics Question 20

Practice objective / multiple choice question 20 from the 2023 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2023 Physics Objective / Multiple Choice Medium Difficulty
Question 20 NECO_MODEL_QUESTIONS_VOL1 • 2023 • PHYSICS • objective

200 g of water at \(80^{\circ}\text{C}\) is mixed with 100 g of ice at \(-10^{\circ}\text{C}\). The specific heat capacities are \(c_{\text{water}} = 4.18\ \text{J g}^{-1}\text{K}^{-1}\) and \(c_{\text{ice}} = 2.09\ \text{J g}^{-1}\text{K}^{-1}\). The latent heat of fusion of ice is \(L_f = 334\ \text{J g}^{-1}\). Assuming no heat loss to the surroundings, determine the final temperature of the mixture and state whether any ice remains.

Answer Options

A. Final temperature ≈ 0 °C, some ice remains
Correct Answer B. Final temperature ≈ 25 °C, all ice melted
C. Final temperature ≈ 10 °C, all ice melted
D. Final temperature ≈ 30 °C, all ice melted
Correct Answer
B
Correct Option:
Final temperature ≈ 25 °C, all ice melted

About This Question

This is Neco Model Questions Vol1 2023 Physics Question 20. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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