1. Convert Henry's constant for benzene, 5.5 x 10 atm.m per mole at 20C, to a dimensionless constant. 2. Estimate Henry's constant for benzene at 25C given vapor pressure = 95.2 mm Hg and solubility = 1,780 mg/L. 3. Betterton and Hoffman report the Henry's constant for formaldehyde in water at 25C as 2.97 x 10M atm ?. Convert this value to units of atm m/mol. 4. Estimate the diffusion coefficient for chloroform in air at 25 C using Boltzmann's equation. If the reported value of chloroform diffusivity in air at 25 C air) is 9.5 X 102 cm/s, what is the % error? 5. A1 mcontainer holds 50 g of hydrogen. The temperature is 20C. Determine the pressure. 6. Estimate the diffusion coefficient for methyl phenyl sulfide in water at 25C