Page 2/2 (30\%) In these four case (A D), the diffusivities are X,Y,Z and K, respectively. The molecule weight of air is 28.8g/mole,(DAB:cm2/s,T:K,M:g/mole,AB=0.5(A+B),AB=(AB)05) Case A : The diffusivity of hydrogen in air at 0.9atm and 90C is X Case B: The diffusivity of bromine in air at 2atm and 90C is Y Case C: The diffusivity of bromine in air at 2atm and 40C is Z Case D: The diffusivity of bromine in air at 0.9atm and 40C is K (15\%) (a) Compare the diffusivities X,Y,Z and K. Show the order from the highest to lowest ( ). Also you need to explain how do you make this order. NO explanation and calculations get NO points. DAB=PAB2D0.001858T3/2(MA1+MB1)1/2 (15\%) (b) Calculate the highest diffusivity value