1. Structure 1 — Models of the Particulate Nature of Matter
Percentage Composition — Quiz
Test your understanding of percentage composition with 5 practice questions.
Practice Questions
Question 1
What does percentage composition of a compound tell you?
Question 2
Which formula is used to calculate the percentage by mass of an element in a compound?
Question 3
What is the percentage composition of hydrogen in $H_2O$? Use $H = 1$ and $O = 16$.
Question 4
What is the percentage composition of oxygen in $CO_2$? Use $C = 12$ and $O = 16$.
Question 5
A compound contains $40\%$ sulfur and $60\%$ oxygen by mass. Which empirical formula is most likely?