CK-12 Foundation
Ck 12: Percent Composition and Empirical & Molecular Formulas
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will learn to calculate the percent composition of a compound either from mass data or from the chemical formula. They will use...
CK-12 Foundation
Ck 12: Chemical Formulas
[Free Registration/Login may be required to access all resource tools.] Students will use a chemical formula or mass data to calculate the percent composition of a compound, and then calculate the empirical or molecular formula for a...
University of Nebraska
University of Nebraska: Determining a Molecular Formula
This is a seven part site from the University of Nebraska on molecular formulas. Sections are: Introduction, Purpose, General Safety Considerations, Procedure, Data Analysis and Concept Development, Implications and Applications,...
Crescent Public Schools
The Internet Science Room: Percentage Composition and Empirical Formulas
Students learn how to find percentage composition, the percentage of a formula mass represented by each element. Percentage composition compares the mass of one part of a substance to the mass of the whole.
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Determination of Empirical and Molecular Formulas:
Listen as this audio book shows the determination of empirical and molecular formulas. View the formula to calculate empirical and molecular formulas and the written steps for calculating.
Carnegie Mellon University
Chem Collective: Stoichiometry Bridge Course
This is a complete course in chemical stoichiometry, set in a scenario that shows how stoichiometry calculations are used in real-world situations. This course has been designed to not only help you strengthen your skills with...
Frostburg State University
Frostburg State University Chemistry Online: Polyatomic Ions
A good reference page for anyone studying polyatomic ions. Tables included on this page organize polyatomic ions by family and by charge. Information on naming compounds with polyatomic ions is also provided. There is a link to an online...
Frostburg State University
General Chemistry Online: The Mole Concept
Resource provides notes on Moles and Stoichiometry. Deals with all book-keeping aspects, including as section on yields and limiting reactants. Includes lesson plans, lecture slides and notes, links to related websites, and frequently...