Lesson: Percentage Composition
In this lesson, we will learn how to calculate the percentage composition of a material using chemical formulas or the masses of constituent elements.
Sample Question Videos
Worksheet: 16 Questions • 2 Videos
A 5.0 g sample of spinal fluid contains 3.75 mg (0.00375 g) of glucose. What is the percent by mass of glucose in spinal fluid?
A bottle of a tile cleanser contains 135 g of and 775 g of water. What is the percent by mass of in this cleanser?
A compound contains only the elements X and Y. A sample of the compound with a mass of 12.5 g is found to contain 6.50 g of X. What is the percentage composition of the compound?