Percent is really a ratio that can be used as a conversion factor. Using Percent as a Conversion Factor Percent is really a ratio that can be used as a conversion factor.

Let’s create a ratio to use as a conversion factor. A sample of ore was found to contain 0.35 % Au by mass. How many milligrams (mg) of Au can be recovered from 535 kg of ore? 535 kg ore 1 x 103 0.35 Au m = mg Au 1.87 x 106 100 ore k 1 x 10-3 Let’s create a ratio to use as a conversion factor. 0.35 Au 100 ore