# Ch 9: MTEL Chemistry: Stoichiometry & Chemical Equations

### About This Chapter

## MTEL Chemistry: Stoichiometry & Chemical Equations - Chapter Summary

The lessons of this chapter will help you prepare for the Massachusetts Tests for Educator Licensure (MTEL): Chemistry exam about stoichiometry, and calculations of stoichiometry. Each lesson is taught by an expert instructor so that you may have an effective way to review:

- How to balance chemical equations
- Using the mole to count atoms
- Calculate mole-to-mole ratios and chemical equations
- Solving mass-to-mass stoichiometric equations
- Calculating excess reactants, reaction yield and percentage yield
- Working with empirical formulas and calculating percent compositions
- Chemical formulas for empirical data and hydrates

These videos are also mobile-device friendly, so you can study virtually anywhere. Transcripts are included in the chapter. These written overviews will not only provide you with an addition review of the material, but also a way to study the key vocabulary terms of the chapter. You can also test your understanding of each lesson by taking the lesson quizzes.

### 1. Chemical Reactions and Balancing Chemical Equations

In this lesson, you'll learn how to balance a chemical reaction equation using the conservation of matter law. You'll also learn how to write both word and formula equations, what the subscripts after a letter mean and what the numbers in front of compounds mean.

### 2. Avogadro's Number: Using the Mole to Count Atoms

How do we move from the atomic world to the regular world? Because atoms are so tiny, how can we count and measure them? And what do chemists celebrate at 6:02 AM on October 23rd each year? In this lesson, you will be learning how Avogadro's number and the mole can answer these questions.

### 3. Mole-to-Mole Ratios and Calculations of a Chemical Equation

Learn what a mole ratio is and how to determine and write the mole ratio relating two substances in a chemical equation in this video lesson. Also, learn to make mole-to-mole calculations and solve problems involving moles of substances.

### 4. Mass-to-Mass Stoichiometric Calculations

Learn how to set up and make mole to mass, mass to mole and mass to mass stoichiometric calculations. Learn how the ratios of moles helps you compare and make calculations. Learn how to relate mole ratios to molar mass.

### 5. Stoichiometry: Calculating Relative Quantities in a Gas or Solution

In this lesson, learn about molar volume and how to set up and make stoichiometric calculations with gases. Then learn about solution stoichiometry and how to make stoichiometric calculations with solutions.

### 6. Limiting Reactants & Calculating Excess Reactants

In this lesson, you'll learn what limiting reactant and excess reactant mean and how to determine which reactant is limiting in a chemical reaction when given the amount of each reactant. You'll also discover how to calculate the amount of product produced.

### 7. Calculating Reaction Yield and Percentage Yield from a Limiting Reactant

Learn what the theoretical yield, actual yield and percent yield are. Given the limiting reactant, learn how to calculate the theoretical reaction yield, which is also known as the ideal reaction yield and percentage yield.

### 8. Calculating Percent Composition and Determining Empirical Formulas

Learn the difference between the empirical formula and chemical formula. Learn how to calculate the percent composition of an element in a compound. Learn how, if given a percent composition, to determine the empirical formula for a compound.

### 9. Hydrates: Determining the Chemical Formula From Empirical Data

Learn the definition of a hydrate and an anhydrate in this lesson. Discover how, when given experimental data, you can determine the formula of a hydrate by following simple steps that include finding the moles of hydrate and anhydrate and comparing the two to write the formula.

### Earning College Credit

Did you know… We have over 160 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

### Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

### Other Chapters

Other chapters within the MTEL Chemistry (12): Practice & Study Guide course

- MTEL Chemistry: Scientific Inquiry & Research Methods
- MTEL Chemistry: Properties of Matter
- MTEL Chemistry: Liquids & Solids
- MTEL Chemistry: Gases
- MTEL Chemistry: Atomic Structure
- MTEL Chemistry: Chemical Bonding
- MTEL Chemistry: Inorganic & Organic Compounds
- MTEL Chemistry: Chemical Reactions
- MTEL Chemistry: Acids & Bases
- MTEL Chemistry: Reaction Rate
- MTEL Chemistry: Thermodynamics
- MTEL Chemistry: Equilibrium
- MTEL Chemistry: Solutions
- MTEL Chemistry Flashcards