A mixture containing 20 mole % butane, 35 mole % pentane and rest hexane, is to be separated by fractional distillation into a distillate containing 95 mole % butane, 4 mole % pentane and rest hexane and a bottom product. The distillate is expected to contain 90% of the butane in the feed. Calculate the composition of the bottom product.

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant