The volume of steam produced by `1g` of water at `100^(@)C` is `1650 cm^(3)`. Calculate the change in internal energy during the change of state. Given `J= 4.2xx10^(7) erg`.
`cal.^(-1), d= 981 cm^(s-2)`. Latent heat of stream `= 540 cal. G^(-1)`

The latent heat of vaporisation of water at 100 ^(@)C is 540 cal g^(-1) . Calculate the entropy increase when one mole of water at 100^(@)C is evaporated

Calculate the change in internal energy when 5g of air is heated from 0^(@) to 4^(@)C . The specific heat of air at constant volume is 0.172 cal g^(-1) .^(@)C^(-1) .

A system absorbs 100 cal of heat and does an external work of 150 J. if J=4.2 J/cal the change in internal energy is

One kg of water at 373K is converted into steam at the same temperature. The volume 1 cm^(3) of water becomes 1671 cm^(3) on boiling. Calculate the change in internal energy of the system , if heat of vaporisation is 540 cal g^(-1) . Given standard atmospheric pressure =1.013xx10^(5) Nm^(-2) .

1gm water at 100^(@)C is heated to convert into steam at 100^(@)C at 1atm . Find out chage in internal energy of water. It is given that volume of 1gm water at 100^(@)C = 1c c , volume of 1gm steam at 100^(@)C = 167 1 c c . Latent heat of vaporization = 540 cal//g . (Mechanical equivalent of heat J = 4.2J//cal)

Steam at 100^(@)C is passed into 20 g of water at 10^(@)C when water acquire 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) ]

Steam at 100^(@)C is passed into a copper cylinder 10 mm thick and of 200 cm^(2) area. Water at 100^(@)C collects at the rate of 150 g min^(-1) . Find the temperature of the outer surface, if the conductivity of copper is 0.8 cal s^(-1) cm^(-1) .^(@)C^(-1) and the latent heat of steam is 540 cal g^(-1) .

Latent heat of vaporisation of water is 540cal g^(-1) at 100^(@)C calculate the entropy change when 1000 g water is converted to steam at 100^(@)C