Calculate the mass flux of benzene through a slab of air 1 cm thick at 25°C and 2 atm . The partial pressure of benzene is 50 mm Hg at the left face of the slab and 10 mm Hg at the right face of the slab . The mass diffusivity at 25 ° C and 2 atm is 0.044 sq cm / sec.

Data for the next problems A commercial adsorbent can remove impurities from amyl acetate that meets the rigorous quality control standard set by FDA. This adsorbent is a smooth rigid spherical particle with a density of 2750 kg/m³ and a particle diameter of 8.0 ± 0.01 mm. The porosity of a packed bead containing these particles is 0.36. Amyl acetate is an organic compound with the chemical formula C7H1402 and the molecular weight 130.2 kg/kmol. It has a scent similar to bananas. Amy acetate has a standard density of 876 kg/m³, a melting point of - 71°C, a normal boiling point of 149°C, and has a solubility of 20 g/L in water. The liquid viscosity coordinates for amyl acetate CH3 H3C are X = 11.8 and Y = 12.5. %3D

Estimate the thermal conductivity of benzene at 30C.

5. Solar ponds are small artificial lakes used to store solar energy. The rise of heated (and thus less dense) water to the surface is prevented by adding salt at the pond bottom. In a typical salt gradient solar pond, the density of water increases in the gradient zone, as shown. For H 4 m, po 1040 kg/m³, and a thickness of 0.8 m for the surface zone, calculate the gauge pressure at the bottom of the gradient zone. V S Sun = = H=4m = Surface zone Po 1040 kg/m³ Increasing salinity and density Gradient zone Storage zone - (2 Po=1040 kg/m P= Po(1+35+5²)