Calculating heat changes through phase changes

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Presentation transcript:

Calculating heat changes through phase changes Givens (for water): Cpsolid = 2.1 J/g°C Cpliquid = 4.18 J/g°C Cpvapor = 1.7 J/g°C ∆Hfus = 6.01 KJ/mole ∆Hvap = 40.7 KJ/mole

How much heat is released when 45.0g of water cools from 80.0˚C to 25.0˚C?

How much heat is released when 45.0g of water cools from 80.0˚C to 25.0˚C?

How much heat is required to heat 25. 0g of ice (solid water) from -20 How much heat is required to heat 25.0g of ice (solid water) from -20.0˚C to 35.0˚C?

How much heat is required to heat 25. 0g of ice (solid water) from -20 How much heat is required to heat 25.0g of ice (solid water) from -20.0˚C to 35.0˚C?