1. (i) A vessel contains N molecules of oxygen at a certain temperature and pressure. How many molecules of sulphur dioxide can the vessel, accommodate at the same temperature and pressure?   2. (ii) Each of two flasks contain 2.0 g of gas at the same temperature and pressure. One flask contains oxygen and the other hydrogen. 1. Which sample contains the greater number of molecules? 2. If the hydrogen sample contains N molecules, how many molecules are present in oxygen sample?   3. (iii) A gas sample occupies 4 litre at 27°C and P atmospheric pressure. What would be its volume at 327°C and 2P atmospheric pressure?