A chemist has a 50 mL beaker of a 20% solution.
a. Write an equation for the concentration, C, of the solution after adding x mL of pure water.
C =
b. Find the inverse of the function. In other words, write x as a function of C.
x =
c. Determine how many mL of water should be added to obtain a 10% solution. Round your answer to 1 decimal place.
mL