What is the minimum distribution coefficient that permits removal of 99% of a solute from 50.0 mL

Question:

What is the minimum coefficient that permits removal of 99% of a solute from 50.0 mL of water with
(a) Two 25.0-mL extractions with toluene?
(b) Five 10.0-mL extractions with toluene?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...