Articles Index

Worked Chemistry Problems
These are examples of worked chemistry problems. Printable worksheets with questions and answers are also provided.

Paramagnetism and Diamagnetism Worked Problem
Here is a worked example problem showing how to tell whether an element is paramagnetic or diamagnetic based on its electron configuration.

Ideal Gas Example Problem - Partial Pressure
This is an example demonstrating how to determine the partial pressure of a gas in a mixed system of gases.

Acids and Bases - Calculating pH
Here is an example of an acid/base problem to calculate the pH of an aqueous solution where the concentration of H[sup]+[/sup] is known.

Ideal Gas Example Problem - Constant Volume
Here is an example of an ideal gas problem where the volume of the gas is held constant.

Ideal Gas Example Problem - Constant Temperature
Here is an example of an ideal gas problem where the temperature of the gas is held constant.

Aqueous Solution Dilutions
Here is a worked example of how to calculate a dilution of a stock solution.

Concentration and Molarity Worked Example Problem
This is a worked example of how to determine the concentration of individual ions in an aqueous solution from the total concentration.

Concentration and Molarity Worked Example Problem
This is a worked example showing the steps necessary to find the concentration of a solution when given the amount of solute.

Concentration and Molarity Worked Example Problem
This is a worked example showing the steps necessary to create a stock solution of predetermined concentration.

Carbon 14 Dating of Organic Material
Here's a worked example of the calculation for carbon 14 dating of organic material.

Bond Energies and Enthalpy Change Example Chemistry Problem
Bond energies and enthalpy can be used to determine if a reaction is endothermic or exothermic. Here is an example showing how to determine the change in enthalpy of a reaction.

Avogadro's Number Example Chemistry Problem
Avogadro's number is the number of atoms or molecules in a mole. Here is an example of using this number to determine the number of molecules contained in a known mass of molecules.

Avogadro's Number Example Chemistry Problem
Avogadro's number is the number of atoms or molecules in a mole. Here is an example of using this number to determine the mass of a known number of molecules.

Avogadro's Number Example Chemistry Problem
Avogadro's number is the number of atoms or molecules in a mole. Here is an example of using this number to determine the mass of a single atom based on the atomic mass of that atom.

Atomic Mass and Atomic Abundance Example Chemistry Problem
Atomic mass is determined by the weighted average of the masses of naturally-occurring isotopes. Here is an example of how to determine the atomic abundance.

Atomic Mass from Atomic Abundance Example Chemistry Problem
Atomic mass is determined by the weighted average of the masses of naturally-occurring isotopes. Here is an example of how to determine the atomic mass from known atomic abundances.

Empirical Formula - Worked Chemistry Problems
Learn how to find the empirical formula from percent composition data.

Gram to Mole Conversions
Here are worked examples problems for mole to gram or gram to mole conversions.

Acids and Bases - Titration Example Problem
Here is an acids and bases example problem involving titration. A base of known concentration is used to neutralize an unknown concentration of an acid.

Acids and Bases - Calculating pH of a Weak Acid
Here is an example of an acid/base problem to calculate the pH of a weak acid solution of known concentration.

Acids and Bases - Calculating pH of a Strong Acid
Here is an example of an acid/base problem to calculate the pH of a strong acid.

Acids and Bases - Neutralizing a Base with an Acid
This example demonstrates the method used to calculate the amount of an acid of known concentration needed to neutralize a base of known concentration.

Acids and Bases - Calculating pH of a Strong Base
Here is an example of an acid/base problem to calculate the pH of a strong base.

Ideal Gas Example Problem - Unknown gas
This is an example of a problem where element or compound is unknown, but the mass and gas properties pressure, volume and temperature are known.

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