## Lecture Help Pages-CSUDH Chemistry Department

This is the entry point to a set of pages aimed at aiding you in your studies of
chemistry. There are currently **105** pages available. The pages are of three types.
The first type-**Drill and Practice**-generate random problems in a table format for you. The second-**Word Problems**-present random word problems
in specifc areas. The third-**Data Analysis**-require that you provide some imput data for
the page to use. The pages are sorted by general categories and are most easily reached by
using the first table below to reach a category. You may also scroll down this page to the
full list of pages. There is now a fairly comprehensive treatment of stoichiometry and of the uses of
chemical formulas. After the page title, you will find **(DP)** if it is a drill and practice page, **(WP)** if it is a word problem page or **(DA)** if it is a data analysis page. Once you find the page you
wish to use, click on the in front of the title. You may return to this page by clicking on the which appears at the bottom of each page.

**Browser Note**:
In general the pages will run properly with Netscape 3.x and 4.x and Internet Explorer 4.x. There are a numer of pages which will not run under Internet Explorer. They are noted with a "**Netscape Only**" label.

**Important Notice**/Most of these pages now have the option of displaying the correct answer after three incorrect responses. In some instances, when you display the answer, you may see a result with extra significant figures. Don't be concerned about this. The intent of these pages is for you to develop your problem solving skills. In the actual grading portion of the programs, allowances are made for proper significant figures. Thus, if you approach the problem correctly and submit a solution with the proper number of significant figures, it will be judged correct by the program.

#### Basic Concepts

Significant Figures**(DP)**

Exponents**(DP)**-**Netscape Only**

Direct and Inverse Relationships**(DP)**

Scientific Notation**(DP)**

Smaller, larger or the same?**(DP)**

Smaller, larger or the same?-Timed**(DP)**

Mass, density and volume**(DP)**

Percentage**(DP)**

Wavelength, frequency and energy**(DP)**

Mass, density and volume**(WP)**

Mass, moles and volume-relating two elements**(WP)**

Make a Guess #1(WP)

Make a Guess #2(WP)

Make a Better Guess #1(WP)

Make a Better Guess #2(WP)

#### Converting Dimensions

Converting Volumes**(DP)**

Converting Mass**(DP)**

Converting Distance**(DP)**

Converting Densities**(DP)**

#### Atoms and Elements

Protons,electrons and neutrons**(DP)**

Elements,moles and mass**(DP)**

The Periodic Table**(DP)**

The Quantum Numbers**(WP)**

Electronic Structures of Atoms and Ions**(WP)**

Atomic Spectrum of Hydrogen**(WP)**

The de Broglie Wave Equation**(WP)**-**Netscape Only**

#### Gas Laws

Boyle's Law**(DP)**

Charles' Law**(DP)**

Avogadro's Law**(DP)**

Combined Gas Law**(DP)**

The Ideal Gas Equation**(WP)**

The Complete Gas Law Page**(WP,DP)**

Graham's Law**(DA)**

Universal Gas Law Calculation Page**(DA)**

Raoult's Law**(DA)**

Clausius-Clapeyron Equation**(DA)**

#### Solutions

Molarity, moles and volume**(DP)**

Molarity, mass and volume**(WP)**

Osmotic Pressure**(DP)**

Freezing and Boiling Points-Aqueous Solutions**(DP)**

#### Heat and Temperature

Converting Temperatures**(DP)**

Heat and Temperature Changes for water**(DP)**

Heat Transfer-water**(DP)**

Heat Transfer-water and another substance**(DP)**

#### Thermochemistry

Hess' Law**(DP)**

The Thermochemical Equation(WP)

Using Bond Energies

Using Heats of Formation

#### Acids and Bases

pH, pOH, [H^{+}], [OH^{-}]**(DP)**

Solutions of Acids and Bases-pH**(DP)**

Solutions of Acids and Bases**(WP)**

Solutions of Acids and Bases-multistep treatment-part 1**(WP)**

Solutions of Acids and Bases-Multistep Treatment-part 2**(WP)**

Acids/Base Titrations**(WP)**

The Composition of Buffers**(WP)**

Properties of Buffers**(WP)**

Common Ion Effect-Acids and Bases**(WP)**

#### Solubility

Slightly Soluble Salts**(DP)**

#### Nomenclature

Simple Nomenclature-Formulas to Names(DP)

Simple Nomenclature-Names to Formulas(DP)

Nomenclature-Stock Notation(DP)

#### Chemical Formulas

Mass, moles and gfw**(DP)**

Chemical Formulas and Mass Relationships**(DP)**

Calculations based on Chemical Formulas**(WP)**

Formulas and Percent Composition**(DA)**

Combustion Analysis**(WP)**

Compound Builder(DA)

#### Kinetics

Determining Orders and Rate Constants**(WP)**

Using the Rate Law**(WP)**

First Order Processes**(WP)**

The Arrhenius Equation**(WP)**

Mechanisms and Rate Laws**(WP)**

Mechanisms and Rate Laws-Advanced**(WP)**

#### Stoichiometry

Balancing Chemical Reactions**(WP)**

Mass Relationships in Chemical Reactions**(WP)**

Limiting Reagents**(WP)**

Calculations based on percent yields**(WP)**

Combining Limiting Reagent and % Yield**(WP)**

#### Electrochemistry

Balancing Oxidation Reduction Reactions**(WP)**

Calculating E_{o}**(WP)**

Faraday's Laws**(WP)**

The Nernst Equation**(WP)**

#### Chemical Equilibrium

Calculating K**(WP)**

Calculating an Equilibrium Concentration**(WP)**

Q vs K**(WP)**

The LeChatelier Effect**(WP)**

Combining Equilibria**(WP)**

#### The Scenario

The Scenario Problem**(WP)**

#### Structures and Bonding

Hybridization**(WP)**

Recognizing Organic Fragments

R and S Configurations

#### Advanced Topics

Slater's Rules**(WP)**

Symmetry**(WP)**

Reducing Reducible Representations**(WP)**

Creating Reducible Representations**(WP)**

Born-Haber Cycles**(WP)**

Hybrid Orbitals-Angular Relationships**(WP)**

Using Drago-Wayland Parameters-#1**(DA)**

Using Drago-Wayland Parameters-#2**(DA)**

Latimer Diagrams**(DA)**

#### Binary Numbers

Converting base 10 and binary numbers**(DP)**

Adding binary numbers**(DP)**

Subtracting binary numbers**(DP)**

Multiplying binary numbers**(DP)**