1 gm is defined as mass of_____ at `3.98^@C`under_____ atmospheric pressure.

One mole of N_2O_4 (g) at 300k is kept in a closed container under one atmospheric pressure. It is heated to 600 k when 20 % by mass of N_2O_4 (g) decomposes to NO_2(g) . The resultant pressure is :

For the reversible vaporisation of water at 100^@C and 1 atmospheric pressure, triangleG is equal to:

When 1.3 g of a solute is dissolvedf in 169 g of water the boiling point of the solution is 100.025^@C at one atmospheric pressure. If K_b of water is 0.52 K kg mol^(-1) . Calculate the molecular mass of the solute.

Find the velocity of a liquid density 800kg//m^3 from a tank in which the pressure of the liquid at the orifice is 480 N//m^3 above the atmospheric pressure.

The density of air near the earth's surface is 1.3kg m^-3 and the atmosphere pressure is 1.0xx10^5Nm^-2 . If the atmosphere has uniform density, same as that observed at the surface of the earth , what would be the height of the atmosphere to exert the same pressure .

What is the freezing point of water at 1 atmospheric pressure in kelvin scales ?