Question

one litre of water at 40 degree celsius is mixed with one litre of water at 60 degree Celsius the temperature of the mixture will be_____________​

Answer 1

Answer:

50°

Explanation:

Let T° be the equilibrium Temperature

so....water at 40° gains & water at 60° loses same to attain final temperature T°

hence....T - 40° = 60° - T

i,e..2T = 100°

T = 50°

Answer 2

Given : One litre of water at 40˚C is mixed with one litre of water at 60˚C

To Find : The temperature of the mixture will be

(i) 85˚C

(ii) more than 60˚C but less than 85˚C

(iii) between 40˚C and 60˚C.​

Solution:

Heat flows from an object at higher temperature to an object at lower temperature.

One litre of water at 40˚C is mixed with one litre of water at 60˚C

Volume of both are same

Heat will transfer from higher temperature water to lower temperature water

means from  60°C to 40°C

Hence 60°C temperature will decrease because of heat transferred to 40°C

and 40°C temperature will increase

Hence Temperature will be between 40˚C and 60˚C

One litre of water at 40˚C is mixed with one litre of water at 60˚C. The

temperature of the mixture will be between 40˚C and 60˚C.​

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