SOLUTION: A chemist has 100 ml of a solution that is 6% acetic acid. If the chemist adds 20 ml of pure water to this solution, what is the percent concentration of the resulting mixture?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: A chemist has 100 ml of a solution that is 6% acetic acid. If the chemist adds 20 ml of pure water to this solution, what is the percent concentration of the resulting mixture?       Log On


   

Question 783759: A chemist has 100 ml of a solution that is 6% acetic acid. If the chemist adds 20 ml of pure water to this solution, what is the percent concentration of the resulting mixture?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
New quantity of solution is 100+20=120 ml. The amount of acetic acid is still the same.
100%2A6%2F120 percent.


Another way to understand this is that you are diluting the 6% acid so that the factor is 100%2F120 or 10%2F12 or 5%2F6 of the initial concentration.