Two liquids A and B on mixing produce a warm solution which type of deviation from Raoult's law does it show? (b) The vapour pressures of pure liquids A and B are at , respectively. Find out the composition of a liquid mixture of total vapour pressure . Also find the composition of the vapour phase. 450 and 700mm of Hg 350K 600mmof Hg .

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Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).