A chemist dissolves 395. mg of pure hydroiodic acid in enough water to make up 210 ml of solution. Calculate the pH of the solution. Be sure your answer has the correct number of significant digits.

)in the deacon process for the manufacture of chlorine, hcl and o2 react to form cl2 and h2o. sufficient air (21 mole% o2, 79% n2) is fed to provide 35% excess oxygen, and the fractional conversion of hcl is 85%. calculate the mole fractions of the product stream components.