The time taken to heat certain amount of water from`0^@C` to `100^@C` in an electric kettle is 15 min and to evaporate it completely is 80 mins. Calculate the value of latent heat of .vapourisation?

An experiment takes 10 minutes to raise temperature of water from 0^(@)C to 100^(@)C and another 55 minutes to convert it totally into steam by a stabilized heater. The latent heat of vaporization comes out to be -

What will be the time required to heat a 15 l bucket full of water from 20^(@)C to 40^(@)C using a 1500 W immersion heater?

When water is heated from 0^(@)C " to " 50^(@)C , density of water

A calorimeter of water equivalent 10 g contains 100 g of water at 90^(@)C . On exposure to air, its temperature falls to 80^(@)C in 5 min. If the same calorimeter is filled with 50 g of an oil, the time for the same drop in temperature is 2 min. Calculate the specific heat of the oil if the rate of heat loss in both the cases is assumed to be the same.

Calculate (1) the enthalpy change in the fusion of 100 g ice at 0^(@)C temperature and 1 atm pressure pressure (2) the enthalpy change in the vaporisation of 10g water at 100^(@)C temperature and 1 atm pressure. Givenn : Latent heat of ice at 0^(@)C temperature and 1 atm pressure =6.02kJ*mol^(-1) and latent heat of vaporisation of water at 100^(@)C temperature= 40.4kJ*mol^(-1) .

One mole of an ideal monoatomic gas is heated at constant pressure from 0^@C to 100^@C . Calculate work done.

Half life period of a first order reaction 15 min. Calculate the rate constant and time for 80% completion of the reaction