A box contains equal number of molecules of hydrogen and oxygen. If there is a fine hole in the box, then which gas will leak rapidly ?

Which contains the same number of molecules as 16 g of oxygen :

Aclosed vessel contains equal number of nitrogen and oxygen molecules at a pressure of P mm. If nitrogen is removed from the system, then the pressure will be :

The number of moles of BaCO_3 Which contains 1.5 moles of oxygen atom is :

A box contains 4 orange and 4 green balls, another box contains 3 orange and 5 groen balls, one of the two box is selected at random and a ball is drawn from the box, which is found to be orange. Find the probability that the ball is drawn from the first box.

The maximum number of hydrogen bonds in which water molecule can participate is:

Given sample of 1 cm^3 of hydrogen and 1 cm^3 of oxygen both at N.T.P. Which sample has larger number of molecules?