A mixture of 0.5 mole of `CO` and 0.5 mole of `CO_(2)` is taken in a vessel and allowed to effuse out through a pinhole into another vessel which has vacuum If a total of A mole has effused out in time t show that `M_(1)A +M_(2) (1-A) =36` where `M_(1)` and `M_(2)` are mean molar masses of the mixture that has effused out and the mixture still remaining in vessel respectively .