MhChem Chemistry with Dr. Michael Russell

Chemistry 222 Video Lecture from January 14, 2026. This video covers material from Chapter 8 including the ideal gas law, PM = dRT, M = gRT/PV, Dalton's Law of Partial Pressures, effusion and diffusion and more. CH 222 website: https://mhchem.org/222 Let me know if you have any questions! Peace!

Chemistry 222 Video Lecture from January 12, 2026. This video covers material from Chapter 7 Part II and Chapter 8 including combustion analysis, gas pressure, types of gas laws, the gas constant and more. CH 222 website: https://mhchem.org/222 Let me know if you have any questions! Peace!

Chemistry 222 Video Lecture from January 9, 2026. This video covers material from Chapter 7 Part II including limiting reactants, excess reactant amount at the end, titration analysis, gravimetric analysis and more. CH 222 website: https://mhchem.org/222 Let me know if you have any questions! Peace!

This the Complete Lecture for Chapter 7b. This episode is part 1 of 2 episodes.

A screencast from Chapter 7b in CH 222 entitled “Limiting Reactants”

A screencast from Chapter 7b in CH 222 entitled “Stoichiometry II”

A screencast from Chapter 7b in CH 222 entitled “Stoichiometry I”

Chemistry 222 Video Lecture from January 7, 2026. This video covers material from Chapter 7 Part II including stoichiometric coefficients, theoretical yield, actual yield, percent yield, limiting reactions, excess reactants, and more. CH 222 website: https://mhchem.org/222 Let me know if you have any questions! Peace!

Chemistry 222 Video Lecture from January 5, 2026. This video covers material from Chapter 7 Part II including a review of Chapter 7 Part I (from CH 221), stoichiometry, the importance of a balanced equation, the 'grams moles moles grams' dance, and more. CH 222 website: https://mhchem.org/222 Let me know if you have any questions! Peace!

Welcome! This is a video to help students get started in Dr. Russell's chemistry classes at Mt. Hood Community College in Gresham, Oregon, USA. Website: https://mhchem.org Let me know if you have any questions! Peace!

This video will help you find our three main chemistry classrooms (namely AC 1303, AC 2501 and AC 2507) as well as my office (AC 2568) at Mt. Hood Community College in Gresham, Oregon, USA. To get to all of these locations, go to the "F" or "G" parking lots (or as close to them as possible), both of which are located near the main MHCC entrance on NE 29th street and NE Kane Dr. in Gresham ). AC 1303 is on the lower level of the campus, adjacent to the Planetarium. AC 2501, AC 2507 and my office (AC 2568) are located on the upper level of campus, and all are very close to the "F" and "G" parking lots. Let me know if you have any questions! Peace!

Welcome to Chemistry 222 with Dr. Michael Russell!

Chemistry 221 L1 Video Lecture from December 5, 2025. This video covers Day 3 of an Exam Review for the Final Lecture Exam. We also had two student presentations at the beginning of class. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from December 4, 2025, Part 3 of 3. This video covers Part III of an Exam Review for the Final Lecture Exam. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from December 4, 2025, Part 2 of 3. This video covers Part II of an Exam Review for the Final Lecture Exam. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from December 4, 2025, Part 1 of 3. This video covers Part I of an Exam Review for the Final Lecture Exam. We also had three student presentations at the beginning of the lecture. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from December 3, 2025. This video covers Day 2 of an Exam Review for the Final Lecture Exam. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from December 1, 2025. This video covers Day 1 of an Exam Review for the Final Lecture Exam. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 24, 2025. This video covers material from Chapter 7 Part I including a review of the three double displacement reaction types, combustion reactions, redox reactions, oxidation and reduction (and reducing agents and oxidizing agents), redox numbers and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 21, 2025. This video covers material from Chapter 7 Part I including the solubility table, exchange (double displacement) reactions, the precipitation reaction, the acid-base reaction, strong and weak acids and bases, the gas forming reaction, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

A screencast from Chapter 6 in CH 221 entitled “Empirical Formulas”

A screencast from Chapter 6 in CH 221 entitled “Molecular Formulas”

A screencast from Chapter 6 in CH 221 entitled “Molarity”

A screencast from Chapter 7a in CH 221 entitled “Balancing Chemical Equations”

A screencast from Chapter 7a in CH 221 entitled “Aqueous Solutions and Solubility”

A screencast from Chapter 7a in CH 221 entitled “Precipitation Reactions”

A screencast from Chapter 7a in CH 221 entitled “Acid Base Reactions”

A screencast from Chapter 7a in CH 221 entitled “Gas Forming and Combustion Reactions”

This the Complete Lecture for Chapter 7 Part I. This episode is part 1 of 2 episodes.

Chemistry 221 L2 Video Lecture from November 20, 2025, Part 3 of 3. This video covers Chapter 7 Part I (sections 7.1 - 7.2 only) including redox reactions, oxidation and reduction, reducing agent and oxidizing agent, single replacement reactions, oxidation numbers and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from November 20, 2025, Part 2 of 3. This video covers Chapter 7 Part I (sections 7.1 - 7.2 only) including solubility tables, exchange (double displacement) reactions, precipitation reactions, acid-base reactions, types of acids and bases, gas forming reactions, combustion reactions and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from November 20, 2025, Part 1 of 3. This video covers Chapter 7 Part I (sections 7.1 - 7.2 only) including the balanced chemical equation, states of matter in equations, stoichiometric coefficients, the law of conservation of mass, balancing equations, ionic chemicals in water, spectator ions, net ionic equations, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 19, 2025. This video covers material from Chapter 7 Part I including aqueous ionic compounds, net ionic reactions, spectator ions, solubility tables (and how to use one), and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 17, 2025. This video covers material from Chapter 7 Part I including the balanced chemical equation, states of matter in equations, stoichiometric coefficients, the law of conservation of mass, balancing equations, ionic chemicals in water, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 14, 2025. This video covers material from Chapter 6 including molarity, preparing a solution through measurement of a solid and dilution, the dilution equation, mass and volume percentages, parts per million, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 12, 2025. This video covers material from Chapter 6 including empirical formula, molecular formula, finding an empirical (and molecular) formula from combustion, concentration, molarity, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 10, 2025. This video covers material from Chapter 6 including formula mass and molar mass, how chemists find a molecular formula, percent composition, empirical formulas, using molar mass to convert empirical formulas to molecular formulas, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 7, 2025. This video covers Day 3 of an Exam Review for the Midterm Exam II. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 3 of 4. This video covers material from Chapter 6 including finding an empirical formula, the difference between an empirical formula and a molecular formula, finding a molecular formula using an empirical formula and the molar mass, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 4 of 4. This video covers material from Chapter 6 including solutions, morality, creating a solution from mass of solute, creating a solution using a concentrated solution (C1V1 = C2V2), other concentration types, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 2 of 4. This video covers Part II of an Exam Review for the upcoming Midterm Exam II. This lecture also started the material for Chapter 6 including finding a formula in chemistry, methods for finding an empirical formula, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 1 of 4. This video covers Part I of an Exam Review for the upcoming Midterm Exam II. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 5, 2025. This video covers Day 2 of an Exam Review for the Midterm Exam II. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from November 3, 2025. This video covers Day 1 of an Exam Review for the Midterm Exam II. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from October 31, 2025. This video covers material from Chapter 5 including building a molecular orbital diagram, bond order, bond order with respect to Lewis structures, magnetism, making ions in MO diagrams, shorthand notation, and more. CH 221 website: http://mhchem.org/221 Let me know if you have any questions! Peace!

A screencast from Chapter 5 in CH 221 entitled “Valence Bond and Molecular Orbital Theory”

A screencast from Chapter 5 in CH 221 entitled “Chapter 5 Screencast - Valence Bond Theory (BF3)”

A screencast from Chapter 5 in CH 221 entitled “Chapter 5 Screencast - Valence Bond Theory (CH4)”

A screencast from Chapter 5 in CH 221 entitled “Multiple Bonds in VB Theory”

A screencast from Chapter 5 in CH 221 entitled “An Introduction to Molecular Orbital Theory”

A screencast from Chapter 5 in CH 221 entitled “MO Diagrams and Bond Order”