# Stoichiometry

• General Information
• Stochiometry - Short, clear discussion on how to work stoichiometry problems using factor-labeling or dimensional analysis (Mark's Chemistry Tutor).
• Molar Stoichiometry - Moles of Reaction, Mass Relationships, Limiting Reactant (James A Plambeck, University of Alberta).
• Chemistry Web Stoichiometry - Limiting Reactants, Chemical Problems Involving Moles and Mass, Chemical Problems Involving Solution Concentrations; Discussion with sample and practice problems (Robert D. Allendoerfer, SUNY University at Buffalo).
• Stoichiometry (part 1) Discussion of Chemical Equations and Atomic Masses AND Stoichiometry (part 2) - Molecular Mass, The Mole, Balancing Chemical Equations, Stoichiometric Calculations Using Balanced Equations AND Stoichiometry (part 3) - Limiting Reactant Problems, Mass Relationships in Chemical Formulas (Percentage Composition, Empirical and Molecular Formulas)(CHEM 12, PSU York Campus).
• Stoichiometry Table of Contents - Links to : Introduction to the concept, molar ratios, problem types (mole-mole, mole-mass and mass-mass) , stoichiometry worksheet (no answers), percent composition, and Empirical Formulas (ChemTeam, Diamond Bar High School).
• Moles Problem Set - Practice problems with link to answers (Chemistry 145, Scott Van Bramer, Department of Chemistry, Widener University).
• ChemFunctions - Program to calculate answers to a variety of chemistry problems; molar masses for problems can be determined by clicking on elements on a periodic chart (Requires a Java capable browser) (Jon Glassman).
1. Mole Calculations for Chemical Reactions
• Stoichiometry Problems - mole <--> mole, mole <--> mass, mass <--> mass, mole <--> volume, volume <--> volume problems; includes practice problems with links to answers (Ralph Logan, Dallas County Community College District, North Lake College).
• Mole-Mole Problems AND Mole-Mass Problems - Description of problem types and solving processes; with sample problems and practice problems (ChemTeam, Diamond Bar High School). [Problems solved by proportion method.]
• Hints for solving Stoichiometry Problems Mole --> Mole Problems (includes hamburger analogy) (Chemistry 145, Scott Van Bramer, Department of Chemistry, Widener University).

2. Mass Calculations for Chemical Reactions

3. Calculations Involving Other Quantities
• Molar Stoichiometry - Reactions in Solutions (James A. Plambeck, University of Alberta).
• Chemical Reactions Problem Set - Problems involving redox reactions & acid-base reactions, writing and balancing equations (Chemistry 145, Scott Van Bramer, Department of Chemistry, Widener University).

4. Problems Involving Limiting Quantities
• Limiting Reagent and Theoretical Yield - Procedure for determining limiting reagent and theoretical yield; includes example question with link to correct answer (Ralph Logan, Dallas County Community College District, North Lake College).
• Limiting Reagents - How to work limiting reactant problems using the factor-label method; hot dog analogy to explain liniting reactants (Mark's Chemistry Tutor).
• Limiting Reagent Problem Set - Problem set with link to answers (Chemistry 145, Scott Van Bramer, Department of Chemistry, Widener University).

5. Theoretical Yield and Percent Yield
• Limiting Reagent and Theoretical Yield - Procedure for determining limiting reagent and theoretical yield; includes example question with link to correct answer (Ralph Logan, Dallas County Community College District, North Lake College).
• Copper in Ore (Copper Oxide) - Lab experiment to determine % Cu by titration with sodium thiosulfate (Alan Crosby, Boston University).