A vessel with open mouth contains air at `60^@C`. When the vessel is heated upto temperature T, one fourth of the air goes out. The value of T is

Air is filled at 60^(@)C in a vessel of open mouth. The vessle is heated to a temperature T so that 1//4th of air escapes. Assuming the volume of vessel remaining constant, the value of T is

An ideal gas is present in an open vessel at 27^(@)C . If this gas is heated upto TK temperature so that (2)/(3) of final moles of gas are escaped out, then calculate final temperature T.

An open mouthed bottle contains a gas at 60^(@)C the temperature to which the bottle should be heated so that 1/4 of the mass of the gas may leave is,

A vessel contains a small amount of water at 0^(@)C . If the air in the vessel is rapidly pumped out, it causes freezing of the water. Why? What percentage of the water in the container can be frozen by this method? Latent heat of vaporization and fusion are L_(V) = 540 cal g^(-1) and L_(f) = 80 cal g^(-1) respectively.

Two closed vessels of equal volume contain air at P_(0) pressure, T_(0) temperature and are connected through a narrow tube, If one of the vessels is now maintained at T_(0) and other at T, what will be the pressure in the vessels?

An open flask contains air at 27^(@) C and one atm. Pressure. The flask is heated to 127^(@) C at the same pressure . The fraction of original air remaining in the flask will be

Certain amount of an ideal gas is contained in a closed vessel. The vessel is moving with a constant velcity v . The molecular mass of gas is M . The rise in temperature of the gas when the vessel is suddenly stopped is (gamma C_(P) // C_(V))