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A thermos flask contains 250 g of coffee...

A thermos flask contains 250 g of coffee at `90^@C`. To this 20 g of milk at `5^@C` is added. After equilibrium is established, the temperature of the liquid is (Assume no heat loss to the thermos bottle. Take specific heat of coffee and milk as `1.00 cal/(g^@C)`)

A

`3.23^@C`

B

`3.17^@C`

C

`83.7^@C`

D

`37.8^@C`

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TARGET PUBLICATION-Thermal Properties of Matter-Exercise
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