Question

water of mass 80 grams and temperature 45 degree celsius is mixed with water of mass 20 grams and temperature 30 degree Celsius find the temperature of mixture​

Answer 1

Answer:

42-degree centigrade.

You can solve such questions by using heat bank theory. I think heat bank theory is the best way of solving such questions. In heat bank theory we can mix n number of samples which may be ice, water, vapour at different temperatures. Bring their temperature to water at 0 degree and suppose they are depositing their heat to a bank.

After this add all the heat deposited to the bank. And now the whole system is water at 0 degree and all the heat is deposited in the bank.

Now add the mass of individuals to get the exact mass of the system. And give the heat from bank to it. You will get the systems temperature.

Explanation: