Camphor melts at `178^@C` when 1gm A is added to 1000gm of camphor the mixture melts at `138^@C` and when 0.01 gm B is added to 0.5 gm camphour the mixture melts at `168^@C`. Calculate the molecular weight of B?

A 3 litre flask contains 2.2 gms of CO_2 and some mass of oxgyen. If the pressure of the mixture is 1.2 atm at 27^@C , Calculate the partial pressure and the mass of oxygen.

10 grams of steam at 100^(@)C is mixed with 50 gm of ice at 0^(@)C then final temperature is

2.5gms. of a gas is present in 750ml. flask at 32^@C and 770mm, of Hg pressure. Calculate the molecular mass of the gas.

10 grams of steam at 100^(@) C is mixed with 50 gm of ice at 0^(@) C then final temperture is

A camphor sample melts at 176^(@)C.K_(f) for camphor is 40 K kg mol^(-1) . A solution of 0.02 g of a hydrocarbon in 0.8 g of camphor melts at 156.77^(@)C . The hydrocarbon is made up of 92.3% of carbon. What is the molecular formula of the hydrocarbon?

The weight of 1 litre of ozonised oxygen at STP was found to be 1.5gm. When 100 ml of this mixture at STP was treated with turpentine oil, the volume was reduced to 90 ml. The molecular weight of ozone is