Now it's important to remember that when converting to other unit terms such as molarity, the Max percent value itself can represent a conversion factor. So here for example, when we have 2.50% sodium hydroxide solution, it can be represented as 2.50 grams of sodium hydroxide within 100 grams of solution. So this can be written as 2.50g NaOH100 grams of solution.

Now since it's a conversion factor, we can also do the reciprocal where we have 100 grams of solution on top and 2.50 grams of NaOH on the bottom. So keep this in mind. We can basically expand what the mass percent is whenever a value is given to us. That percentage is that number over 100 grams of solution.