A hot metal bolt of mass 0.06 kg and specific heat capacity 899 J/kg^°C is dropped into a calorimeter containing 0.16 kg water at 20^°C. The bolt and water reach a final temperature of 25^°C.What is the initial temperature of the bolt?

When 1 kg of gold bar of specific heat capacity 129 J/kg^°C at 100^°C is dropped into 1 kg of water at 25^°C, the resulting temperature is:

27^°C

75^°C

100^°C

None of the above

What is the heat required in kilocalories to convert 2 kg of ice at 0^°C completely into steam at 100^°C?

How many kg of ice needs to be added to 1.31 kg of water at 64.9^°C to cool the water to 14.9^°C when the Latent heat of ice = 80 kcal/kg?