In an insulated vessel, 100 g ice at 0°C mixes with 200 g water at 60°C. Use L f = 80 cal / g and c w = 1 cal g − 1 ∘ C − 1 . Neglect vessel capacity. Find final temperature in °C to two decimals.

Question

In an insulated vessel, 100 g ice at 0°C mixes with 200 g water at 60°C. Use L f ​ = 80 cal / g and c w ​ = 1 cal g − 1 ∘ C − 1 . Neglect vessel capacity. Find final temperature in °C to two decimals.

TestHub · Accepted Answer

Water cooling to 0°C can release 12000 cal, exceeding 8000 cal needed to melt ice. ​ 200 ( 60 − T ) = 100 ( 80 ) + 100 T . ​ 4000 = 300 T . ​ T = 13.3 3 ∘ C to two decimals.

Physics - Heat & Thermo Question with Solution | TestHub

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