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Final temperature when ice at 0 C is mixed with warm water

This type of question, asked 2 times: May 2021 S1, 19 Apr 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    May 2021 S1

    38
    540 g of ice at 0∘C0^\circ\text{C} is mixed with 540 g of water at 80∘C80^\circ\text{C}. The final temperature of the mixture will be

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  2. Question 2

    19 Apr 2026 S2

    113
    1515 g of ice at 0 ∘C0\ ^\circ\mathrm{C} is added to a vessel containing water at 40 ∘C40\ ^\circ\mathrm{C}. The mass of water and water equivalent of the vessel is 6060 g. Assuming that negligible heat is taken from the surroundings, the final temperature of the mixture will be [ Lice=80L_{\mathrm{ice}} = 80 cal/g , Swater=1S_{\mathrm{water}} = 1 cal/g ]

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