Have you ever wondered what the empirical formula of a substance is? Well, in this blog post we will discuss how to find it. You might be surprised by how easy it can be! Empirical formulas are often used in science, engineering and even cooking. Find out how to use it by reading on! The empirical formula for a compound is the result of taking an average percentage composition between all elements present in that substance. To find the empirical formula we must first calculate percentages based off mass or volume (volume can be converted from milliliters). Next, you take these percentages and divide them equally so they add up to 100%. Finally, write those numbers below one another with a multiplication sign separating each number from its neighbor: %x%y%. The %z% corresponds to total amount of substances represented by our specific fractional amounts x/x + y/y = z as found above.