Question

hot water at 100°C is added to 300g of water at 0°C until the final temperature is 40°C find the mass of the hot water added.the specific heat capacity of water is 4200

Answer 1

Answer:

Let (m)g be the mass of water added.

The heat gained by the water at 30ºC=the heat lost by the water at 100ºC.

So,

300⋅4.2⋅(50−30)=m⋅4.2(100−50)

300⋅20=m⋅50

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Answer 2

Explanation:

hot water at 100°C is added to 300g of water at 0°C until the final temperature is 40°C find the mass of the hot water added.the specific heat capacity of water is 4200