A piece of iron of mass 100 gm is kept inside a furnace for a long time and then put in a calorimeter of water equivalent 10 gm containing 240 gm of water at 20°C. The mixture attains an equilibrium temp. of `60^@C`. Find the temperature of the furnace.
Specific heat capacity of iron = `470 J kg^-1"^@C^-1`.

A solid of mass 70 g is heated and dropped in a calorimeter of water equivalent 10 g conaining 116 g of water. If the fall in temperature of the solid is 15 times the rise in temperature of water, find the specific heat capacity of the solid .

An alloy contains 60% copper and 40% nickel. A piece of this alloy of mass 50 g is heated to 50^(@)C and than dropped into a calorimeter of water equivalent 10 g containing 40 g of water at 20^(@)C . Calculate the final temperature of the mixture. Specific heat of copper ="0.09 cal.g"^(-1).^(@)C^(-1) , and of nickel = "0.11 cal.g"^(-1).^(@)C^(-1)

50 g of an alloy containing 80% copper and 20% silver is heated up to t_(1)=80^(@)C and then dropped in a calorimeter of water equivalent W = 10 g containing m = 90 g of water at t_(2)=20^(@)C . What will be the final temerature of the mixture ? Specific heat capacity of copper and silver are s_(c)=0.09" cal.g"^(-1).^(@)C^(-1) and s_(s)="0.15 cal.g"^(-1).^(@)C^(-1) respectively.

A piece of platinum of mass 200 g, is heated for a sufficiently long time in a furnace and dropped quickly in 650 g of water at 10^(@)C , kept in a container of water equivalent 50g. Final temperature of the mixture becomes 25^(@)C . If the specific heat capacity of platinum is "0.03 cal.g"^(-1).^(@)C^(-1) , find the temperature of the furnace.

An iron of mass 10 g and of specific heat "0.1 cal.g"^(-1).^(@)C^(-1) is heated in a furnace and quickly transferred to a thick - walled copper vessel of mass 200 g and of specific that "0.09 cal.g"^(-1).^(@)C^(-1) , kept at 50^(@)C . The vessel along with its contents, is placed in a calorimeter of water equivalent 20g, containing 180 g water at 20^(@)C . A thermometer dipped in the water of the calorimeter shows the maximum temperature to be 26^(@)C . Find the temperature of the furnace. Will there be any local boiling of water in the calorimeter?

1 gm of ice at 0^@C is added to 5 gm of water at 10^@C . What will be the final temperature of the mixture?

A container contains 50 gm of a liquid at 20^@C 100 gm water at 100^@C is added to it. If the final temperature of the mixture is 40^@C . Find the specific heat of liquid

A sample of 100 gm of water is slowly heated from 27^(@)C to 87^(@)C . Calculate the change in the entropy of water. Specific heat capacity of water = 4200 J cdot kg^(-1) cdot K^(-1)

How much heat is required to rise temperature from -8^@C to 50^@C of 10gm ice. Specific heat of ice 0.5 calorie gm ^-1^@C^ - 1 .