I need help... A chemist has 100ml of a solution that is 9% acetic acid. If the chemist adds 50ml of pure water to this solution, what is the percent concentration of the resulting mixture ?

Question

anonymous · Answer

How many mL of acid are there in the first solution?
How many mL of acid are there in the second solution?
How do you find concentration?

anonymous · Answer

That's why I need help cause it is cofusing. I don't understand

anonymous · Answer

Am I right 13.5%

anonymous · Answer

you can find concentration, by dividing how much of something there is by the total amount. How much acid is there? How much water?

anonymous · Answer

and no, that's not right

anonymous · Answer

So 13.5/150?