Vapour density of mercury with respect to air is 6.92. calculate the number of atoms present inn each molecule of mercury vapour. (Given: Hg=200 and relative density of air=14.5).

At a certain temperature, the vapour density of sulphur with respect to nitrogenn is 9.15. find the number of atoms present in each molecule of sulphur vapour.

Vapour density of a gas, relative to air is 1.528. what is the mass of 2L of the gas at 27^(@)C temperature and 750 mm Hg pressure? [vapour density of air, relative to hydrogen=14.4]

If 15.0 cm of water and spirit each are further poured into the respective arms of the tube, what is the difference in the levels of mercury in the two arms? (Relative density of mercury = 13.6).

in previous question, if 15 cm of water and spirit each are further poured into the respective arms of the tube. Difference in the level of mercury in the two arms is (Take, relvative density of mercury = 13.6)

When a mercury barometer is taken to a place at a height of 25 m above the sea level it shows a pressure difference of 2.5mm with respect to the pressure at the surface of the sea. If the relative density of mercury is 13.6, find the average density of air near sea level

A u tube contains water and methylated spirit separated by mercury. The mercury columns in the two arms are at the same levels with 10 cm of water in one arm and 12.5 cm of spirit on the other arm as shown. If 15 cm of water and spirit each are further poured into the respective arms of the tube. Difference in the level of mercury in the two arms is (Take, relative density of mercury = 13.6, relative density of spirit=0.8)