Percent Composition Worksheet. Find the percent compositions of all of the elements in the following compounds: 1). Cu: ______. Br: ______. 2). NaOH.
Percent composition is the percent by mass of each element present in a compound. Water 1. figure out the molar mass from the formula. Practice Problems.
We'll learn how to calculate percent composition by mass, and we'll work through a number of practice.