The geometry of H₂S and its dipole moment are

One mole of nitrogen gas at 0.8 atm takes 38 s to diffuse through a pinhole. whereas one mole of an unknown compound of xenon with flourine at 1.6 atm takes 57 s to diffuse through the same hole. Calculate the molecular formula of the compound.

When 3.06 g of solid NH₄HS is introduced into a two litre evacuated flask at 27^o C, 30% of the solid decomposes into gaseous ammonia and hydrogen sulphide. (i) K_c and K_p for the reaction at 27^o C (ii) What would happen to the equilibrium when more solid NH₄HS is introduced into the flask?

Give reasons of the following:
BeCl₂ can be easily hydrolysed.