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200 g of ice at –20°C is mixed with 500 ...

200 g of ice at `–20°C` is mixed with 500 g of water `20°C` in an insulating vessel. Final mass of water in vessel is (specific heat of ice `– 0.5 cal g^(–1°)C^(–1)`)

A

700 g

B

600 g

C

400 g

D

200 g

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