## Lecture Help Pages with Solutions-CSUDH Chemistry Department

This is the entry point to a set of pages aimed at aiding you in your studies of
chemistry. The pages generate unique problems and also provide detailed solutions.
### Important Issues

- The pages will run properly with Netscape 4.x and Internet Explorer 4.x or higher.
- Your screen should be set to a minmum resolution of 1024x768. The pages will execute at lower resolutions, but for some of them, parts of the text will overlap.
- To navigate:
- First, select a category from the table below.
- Second, click on the in front of the desired page.
- Several pages are not quite ready. That fact is noted after the link.
- If you wish to download these files to use locally on your computer or server click here.

#### Basic Concepts

Significant Figures

Exponents

Direct and Inverse Relationships

Direct and Inverse Relationships-Calculations

Scientific Notation

Smaller, larger or the same?

Mass, density and volume

Percentage

Wavelength, frequency and energy

Mass, density and volume

Exercises in Comparison

Further Exercises in Comparison

Which is it?

Mass, moles and volume-relating two elements

A,B,pA,pB

#### Converting Dimensions

Converting Volumes

Converting Mass

Converting Distance

Converting Densities

Converting Temperatures

#### Atoms and Elements

Protons,electrons and neutrons

Elements,moles and mass

Using Molar Volume

The Quantum Numbers

Electronic Structures of Atoms and Ions

Atomic Spectrum of Hydrogen

The de Broglie Wave Equation

#### Gas Laws

Boyle's Law

Charles' Law

Avogadro's Law

Combined Gas Law

The Ideal Gas Equation

Graham's Law

Raoult's Law-one volatile component

Raoult's Law-two volatile components

#### Solutions

Molarity, moles and volume

Molarity, mass and volume

Osmotic Pressure

Freezing and Boiling Points-Aqueous Solutions

#### Heat and Temperature

Heat and Temperature Changes for water

Heat Transfer-water

Heat Transfer-water,word problems

Heat Transfer-water and another substance

#### Thermochemistry

The Thermochemical Equation

Hess' Law

#### Acids and Bases

Identifying acids and bases

pH, pOH, [H^{+}], [OH^{-}]

Basic relations(pH,pOH,etc)

Solutions of acids

Solutions of Acids and Bases-complete treatments

Acid-base reactions-calculation of K

Acids/Base Titrations

The Composition of Buffers

Properties of Buffers

#### Solubility

Slightly Soluble Salts

Predicting Precipitation

Solubility and the common ion effect

#### Nomenclature

Simple Naming

Names-Stock Notation

Names to formulas

#### Chemical Formulas

Calculating gfws

Mass, moles and gfw

Mass Relations from chemical formulas

General Treatment of relations from chemical formulas

Percent Composition

Empirical formulas

Combustion Analysis

#### Kinetics

Determining Orders and Rate Constants

Using the Rate Law

First Order Processes

The Arrhenius Equation

#### Stoichiometry

Balancing chemical equations

Mass Relationships in Chemical Reactions

Mole Relationships in Chemical Reactions

General Relationships in Chemical Reactions

Limiting Reagents

Calculations based on percent yields

Using the Limiting Reagent

#### Electrochemistry

Balancing Oxidation Reduction Reactions

Calculating E_{o}

Relating E,K and G

Faraday's Laws

The Nernst Equation

#### Chemical Equilibrium

Calculating K

Calculating K-advanced

Calculating an Equilibrium Concentration

Q vs K

The LeChatelier Effect

Combining Equilibria

Kc and Kp

Advanced Equilibria #1

#### Advanced Topics

Clausius-Clapeyron Equation

Mail to George Wiger

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