2. There 'is 'liquid nitrogen 'in ' a hemispherical 'tank at a certain temperature (T=73K). T The radius of the 'spherical'tank'is 5m. The ambient pressure ' is 1 ' atm. The hemisphericaltank is half full and is open to the atmosphere. The relationship between the liquid level. h 'and the radius of the liquid in the tank 'is given as: R2=(Rh)2+X2 In the equation above X is the radius of the liquid level, h is the liquid level and R(=5m). is the radius of the hemispherical tank. The volume of the liquid in the tank is given as below: R2h1/3h3 The vapor of nitrogen as a function of temperature is given below: A=6.94,B=330.2,C=277.2 a) Derive steady state evaporation rate for nitrogen in terms of R,h,PP Pvap , Diffusivity of nitrogen, T ......25 pts * b) - Determine the value of diffusivity of nitrogen gas in air by using Fuller method... 10 pts c) Determine the value of evaporation rate initially when the evaporation just started...15 pts