When a chemist dilutes pure acid with another substance, the resulting mixture is no longer pure acid. Consistent with the words, pure acid is 100% acid. So, there are 20 grams of pure acid in 20 grams of a pure-acid solution. Laura, a chemist, has 20 grams of a solution that is only 40% acid. How many grams of pure acid are there in Laura´s acid solution?
1 answer
naturally, that would be 0.40 * 20, right?