If 50 gm of water at `0^@C` is added to 250 gm of water at `90^@C`. Find the final temperature

30 gm of ice at 0^@C is placed in a calorimeter of mass 20 gm also at 0^@C . 100 gm of water at 90^@C is poured into the calorimeter. Find the final temperature. (specific heat of calorimeter = 0.4 cal//gm ^@C , Specific heat of water = 0.42 cal//gm ^@C Latent heat of fusion of ice = 80calg )

Steam at 100^@C is passed into 20 g of water at 10^@C When water acquires a temperature of 80^@C , the mass of water present will be Take specific heat of water= 1 cal g^-1^@ C^-1 and latent heat of steam = 540 cal g^-1 )

A hot ball of iron weighing 200 g is dropped into 500 g of water at 10^@C . The resulting temperature is 22.8^@C . If the specific heat of iron is 0.08 (cal)/g^@C then the temperature of hot ball is

When 0.1 kg of ice at 0 ^@C is mixed with 0.32 kg of water at 35 ^@C in a container. The resulting temperature of the mixture is 7.8 ^@C . Calculate the heat of fusion of ice (S_water = 4186 J kg^-1 K^-1)

When 0.1 kg of ice at 0^@ C is mixed with 0.32 kg of water at 35^@ C in a container. The resulting temperature of the mixture is 7.8^@ C . Calculate the heat of fusion of ice ( s_("water") = 4186 J kg^(-1) K^(-1) ).

A calorimeter of mass 50 gm and specific heat capacity 0.42 J g^-1 ^@C^-1 contains some water at 20^@ C. A metal piece of mass 20 gm at 100^@ C is dropped into the calorimeter. After stirring, the final temperature of the mixture is found to be 22^@C .Find the mass of water used. (specific heat of metal piece= 0.3 J g^-1 ^@C^-1 specific heat of water = 4.2 J g^-1 ^@C^-1 )

A copper sphere of mass 500 g is heated 100^@C and then introduced into copper calorimeter containing 100 g of water at 20^@C . Find the maximum temperature of the mixture, if the mass of calorimeter is 100 g and specific heat capacity is 0.1 cal//g^@C

How many grams of ice at 0^@C should be added to 200 gm. of coffee at 90^@C to cool it to 60^@C ? (Assume that coffee-cup is not heated) specific heat of water = 1 c a l / g m ∘ C , Specific heat of coffee = 1.4 c a l / g m ∘ C

Solve the following examples / numeriacal problems: When water of mass 70 g and temperatue 50⁰C is added to water of mass 30g , the maximum temperature of the mixture is found to be 41⁰C . Find the temperature of water of mass 30g before hot water was added to it.

Solve the following problems : A iron block at temperature 80 ⁰C is dipped in water inside the calorimeter at temperature 25 ⁰C . If mass of the block is 500 g and that of water is 266 g . What will be the final temperature attained by all the three ?