Question

What is the percent concentration formula?

Answer 1

The formula for percent concentration is

% by mass = `"mass of [solute](http://socratic.org/chemistry/solutions-and-their-behavior/solute)"/"mass of solution"` × 100 %

You can find the formula, a sample calculation, and a video at

http://socratic.org/questions/how-can-i-find-percent-concentration?answerEditSuccess=1