Find the internal energy of air in a roo...

Find the internal energy of air in a room of volume `40m^(3)` at 1 standard atmospheric pressure.

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(a) Show that internal energy of an ideal gas is expressed as U=(PV)/((gamma-1)) when P= pressure, V= volume and gamma=(C_P)/(C_V) . (b) Hence find the internal energy of air in a room of volum 50m^3 at atmospheric pressure. (1Atm=10^5(N)/(m^2))

The internal energy of one geam of helium at 100 K and one atmospheric pressure is

1g of water at 100^(@)C is converted into steam at the same temperature. If the volume of steam is 1671 cm^(3) , find the change in the internal energy of the system. Latent of steam =2256 Jg^(-1) . Given 1 atmospheric pressure = 1.013xx10^(5) Nm^(-2)

Unit mass of liquid of volume V_(1) completely turns into a gas of volume V_(2) at constant atmospheric pressure P and temperature T. The latent heat of vaporization is "L". Then the change in internal energy of the gas is

The approximate number of air molecules in a 1 m^3 volume at room temperature (300 K) and atmospheric pressure is (Use R = 8.2 xx 10^(-5 ) m^3 atm/mol K and N_A =6.02 xx 10^(23) mol^(-1) )

1.0 m^(3) of water is converted into 1671 m^(3) of steam at atmospheric pressure and 100^(@)C temperature. The latent heat of vaporisation of water is 2.3xx10^(6) J kg^(-1) . If 2.0 kg of water be converted into steam at atmospheric pressure and 100^(@)C temperature, then how much will be the increases in its internal energy? Density of water 1.0xx10^(3) kg m^(-3) , atmospheric pressure = 1.01xx10^(5) Nm^(-2) .

The volume of 1 mol of a gas at standard temperature and pressure is .

Demonstate that the inerval energy U of the air in a room is independent of temperature provided the outside pressure p is constant. Calculate U , if p is equal the normal atmosphere pressure and the room's volume is equal to V = 40 m^3 .

Water of mass m=1kg and M (mol mass) =18 turns completely into saturated vapour at standard atmospheric pressure. Assuming the saturated vapour to be an ideal gas find increment of internal energy of the system. Specific latent heat of steam is L=2550kJ//kg

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