# Physics: Change of State

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1. How much heat must be absorbed by 25g of ice at 0Â°C to change it to water without a change in temperature?

Answer = 2.0kcal

2. A glass weighing 25g contains 75g of water at 27Â°C. how much ice will be needed to bring the temperature to 5Â°C?

Answer = 20.71g

Â© BrainMass Inc. brainmass.com December 15, 2022, 8:19 pm ad1c9bdddfhttps://brainmass.com/physics/phase-changes/physics-change-state-291939

#### Solution Preview

1. The formula for phase change is:

Q = mL

where L is the latent heat of fusion of water = 334 J/g

Q = 25(334)

Q = 8350 J

Since 1 ...

#### Solution Summary

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