A beaker contains 40g of water at 20?C. Now 50g of ice is put into the beaker . What is the final temperature of the mixture?

Dear student,
Heat required for melting of ice to water at 00C=50×80=4000J=4kJ Heat released by water at 20  o  C to 00C=40×1×(200)=800J Released heat is very less than required heat, so final temperature will be 00C

Regards

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