Find the heat energy required to boil 5 kg of water iff its initial temperature is `30^(@)C` (specific heat of water is 4200 J `kg^(-1)" "k^(-1)` and boiling point is `100^(@)C`)

The heat energy required to vapourise 5 kg of water at 373 K is

An electric kettle of 2000 Wis used to boil 20 litres of water. Find the time required to boil to the water from its initial temperature of 20^(@)C . (Take specific heat of water as 4200 J kg^(-1) K^(-1) . Density of water = 1000kg m^(-3) )

Specific heat capacity of water is ____ J kg^(-1) K^(-1) .

Find the heat energy required to raise the temperature of 5 kg of water at 80^@C to 100^@C . (Specific heat of water is 1 cal g^(-1)""^(@)C^(-1) )

Find the change in the internal energy of 2 kg of water as it heated from 0^(0)C to 4^(0)C . The specific heat capacity of water is 4200 J kg^(-1) K^(-1) and its densities at 0^(0)C and 4^(0)C are 999.9 kg m^(-3) and 1000 kg m^(-3) respectively. atmospheric pressure =10^(5) Pa.

Certain amount of heat is given to 100 g of copper to increase its temperature by 21^@C . If same amount of heat is given to 50 g of water, then the rise in its temperature is (specific heat capacity of copper = 400 J kg^(-1) K^(-1) and that for water = 4200 J kg^(-1) K^(-1))

Find the increase in mass when 1 kg of water is heated from 0^@C to 100^@C . Specific heat capacity of water = 4200 J kg^(-1) K^(-1) .

How much heat energy is gained when 5 kg of water at 20^(@)C is brought to its boiling point (Specific heat of water = 4.2 kj kg c)

The specific heat of water at boiling point is