Free Online Lectures and Courses for Science & Math
59 Courses
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Organic Chemistry
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How Do You Know: Divine or Human Authority vs Logic and Experiment
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Force Laws, Lewis Structures and Resonance
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Double Minima, Earnshaw's Theorem, and Plum-Puddings
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Coping with Smallness and Scanning Probe Microscopy
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X-Ray Diffraction
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Seeing Bonds by Electron Difference Density
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Quantum Mechanical Kinetic Energy
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One-Dimensional Wave Functions
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Chladni Figures and One-Electron Atoms
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Reality and the Orbital Approximation
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Orbital Correction and Plum-Pudding Molecules
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Overlap and Atom-Pair Bonds
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Overlap and Energy-Match
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Checking Hybridization Theory with XH3
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Chemical Reactivity: SOMO, HOMO, and LUMO
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Recognizing Functional Groups
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Reaction Analogies and Carbonyl Reactivity
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Amide, Carboxylic Acid and Alkyl Lithium
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Oxygen and the Chemical Revolution (Beginning to 1789)
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Rise of the Atomic Theory (1790-1805)
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Berzelius to Liebig and Wöhler (1805-1832)
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Radical and Type Theories (1832-1850)
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Valence Theory and Constitutional Structure (1858)
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Determining Chemical Structure by Isomer Counting (1869)
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Models in 3D Space (1869-1877); Optical Isomers
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Van't Hoff's Tetrahedral Carbon and Chirality
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Communicating Molecular Structure in Diagrams and Words
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Stereochemical Nomenclature; Racemization and Resolution
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Preparing Single Enantiomers and the Mechanism of Optical Rotation
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Esomeprazole as an Example of Drug Testing and Usage
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Preparing Single Enantiomers and Conformational Energy
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Stereotopicity and Baeyer Strain Theory
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Conformational Energy and Molecular Mechanics
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Sharpless Oxidation Catalysts and the Conformation of Cycloalkanes
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Understanding Molecular Structure and Energy through Standard Bonds
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Bond Energies / Bond Enthalpies
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Bond Energies, the Boltzmann Factor and Entropy
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Potential Energy Surfaces, Transition State Theory and Reaction Mechanism
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Organic Chemistry
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Representing Structures of the Organic Molecules
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Naming Sample Alkanes
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Naming Alkanes with Alkyl Groups
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Correction-2-Propylheptane Should Never Be the Name
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Common and Systematic
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More Organic Chemistry Naming
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Organic Chemistry Naming Examples 2
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Organic Chemistry Naming Examples 3
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Organic Chemistry Naming Examples 4
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Organic Chemistry Naming Examples 5
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Naming Alkenes Examples
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Naming Alkyl Halides
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sp3 Hybridized Orbitals and Sigma
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Pi Bonds and sp2 Hybridzied Orbitals
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Newman Projections
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Newman Projections 2
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Chair and Boat Shapes for Cyclohexane
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Double Newman Diagram for Methcyclohexane
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Introduction to Chirality
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Chiral Examples 1
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Chiral Examples 2
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Cahn-Ingold-Prelog System for Naming Enantiomers
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R,S (Cahn-Ingold-Prelog) Naming System Example 2
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Stereoisomers, Enantiomers, Diastereomers, Constitutional Isomers and Meso Compounds
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Cis-Trans and E-Z Naming Scheme for Alkenes
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Entgegen-Zusammen Naming Scheme for Alkenes Examples
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Introduction to Reaction Mechanisms
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Markovnikov's Rule and Carbocations
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Addition of Water (Acid-Catalyzed) Mechanism
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Polymerization of Alkenes with Acid
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Sn2 Reactions
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Sn1 Reactions
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Steric Hindrance
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Sn2 Stereochemistry
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Solvent Effects on Sn1 and Sn2 Reactions
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Nucleophilicity (Nucleophile Strength)
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Nucleophilicity vs. Basicity
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E2 Reactions
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E1 Reactions
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Zaitsev's Rule
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Comparing E2 E1 Sn2 Sn1 Reactions
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E2 E1 Sn2 Sn1 Reactions Example 2
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E2 E1 Sn2 Sn1 Reactions Example 3
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Free Radical Reactions
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Alcohols
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Alcohol Properties
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Resonance
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Ether Naming and Introduction
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Cyclic Ethers and Epoxide Naming
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Ring-opening Sn2 Reaction of Expoxides
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Sn1 and Sn2 Epoxide Opening Discussion
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Aromatic Compounds and Huckel's Rule
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Naming Benzene Derivatives Introduction
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Electrophilic Aromatic Substitution
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Bromination of Benzene
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Amine Naming Introduction
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Amine Naming 2
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Amine as Nucleophile in Sn2 Reaction
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Amine in Sn2 Part 2
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Sn1 Amine Reaction
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Aldehyde Introduction
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Ketone Naming
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Friedel Crafts Acylation
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Friedel Crafts Acylation Addendum
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Keto Enol Tautomerization
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Carboxlic Acid Introduction
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Carboxylic Acid Naming
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Fisher Esterification
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Acid Chloride Formation
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Amides, Anhydrides, Esters and Acyl Chlorides
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Relative Stability of Amides Esters Anhydrides and Acyl Chlorides
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Amide Formation from Acyl Chloride
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Aldol Reaction
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Organic Chemistry: Structure and Reactivity
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Delocalized Pi Systems: 2-Propenyl Video
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Delocalized Pi Systems: Butadiene, Extended Conjugation
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Electronic Spectroscopy
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Electronic Spectroscopy II
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Aromatic Compounds
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Aromatic Compounds II
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Electrophilic Aromatic Substitution
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Electrophilic Aromatic Substitution II
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Aldehydes
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Aldehydes II
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Ketones
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Amines: Properties and Preparation
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Amines: Reactions
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Enones
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Chemistry of Substituted Benzenes
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Carboxylic Acids
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Masked Acyl Anions. Carbohydrates: Names and Structure
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The Families of Sugars and Chemistry of Aldoses
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Carboxylic Acid Derivatives, Mass Spectroscopy
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Amines
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Chemistry of Arenes
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Chemistry of Arenes (Part 2)
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Final Lecture for Chemical Structure and Reactivity: The Future
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Diketones and Hydroxyketones (Part 2)
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Carbohydrates (Part 1)
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Carbohydrates (Part 2)
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Heterocycles
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Amino Acids, Peptides, and Proteins
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Amino Acids, Peptides, and Proteins II
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Origins Science Scholars Program
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The Future of the Planet
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Critterworld: How Biology Transformed One Planet's History
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Almost Everything is Dark
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In the Beginning
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Evidence for Biological Evolution
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Natural Selection and Adaptation
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Species, Speciation, and Evolution on Islands
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What Makes Us So Different?
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Why is Childbirth so Difficult in Humans?
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The Case for the Big Bang
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Mars, Meterorites, and Microbes: A Skeptic's Update on the Continuing Search for Life on Mars
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Great Transitions in Evolution: The Rise of Animals
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The Future of the Universe
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Tails of the Weird: Where Do Bats, Whales, and Primates Come From?
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The Future of Human Health
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The Small and the Tall: Origins of Mammals and Dinosaurs
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Quantum Mechanics and the Universe
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Introduction to DNA: What Makes DNA Tick?
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Applications of Quantum Mechanics
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From Fluctuations to Galaxies
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From Nothing to Something
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Principles of Quantum Mechanics
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Making Stars and Planets
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The Future of Energy
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Ethiopia the Cradle of Human Origins: New Discoveries from the Field
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Physics
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Introduction to Motion Part 1
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Introduction to Motion Part 2
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Introduction to Motion Part 3
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Projectile Motion Part 1
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Projectile Motion Part 2
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Projectile Motion Part 3
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Projectile Motion Part 4
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Projectile Motion Part 5
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Projectile Motion Part 6
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Projectile Motion Part 7
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Projectile Motion Part 8
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Projectile Motion Part 9
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Projectile Motion Part 10
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2-Dimensional Projectile Motion Part 1
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2-Dimensional Projectile Motion Part 2
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2-Dimensional Projectile Motion Part 3
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2-Dimensional Projectile Motion Part 4
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2-Dimensional Projectile Motion Part 5
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Optimal Angle for Projectile Part 1
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Optimal Angle for Projectile Part 2
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Optimal Angle for Projectile Part 3
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Optimal Angle for Projectile Part 4
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Newton's First Law of Motion
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Newton's Second Law of Motion
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Newton's Third Law of Motion
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Newton's Law Problem Part 1
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Newton's Law Problem Part 2
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Newton's Laws
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Introduction to Tension
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Tension Part 2
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Tension in an Accelerating System
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Moving Pulley Problem Part 1
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Moving Pulley Problem Part 2
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Introduction to Momentum
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Momentum: Ice Skater Throws a Ball
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2-Dimensional Momentum Problem Part 1
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2-Dimensional Momentum Problem Part 2
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Introduction to Work and Energy Part 1
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Introduction to Work and Energy Part 2
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Conservation of Energy
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Work/Energy Problem with Friction
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Mechanical Advantage Part 1
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Mechanical Advantage Part 2
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Mechanical Advantage Part 3
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Center of Mass
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Introduction to Torque
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Moments Part 1
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Moments Part 2
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Unit Vector Notation Part 1
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Unit Vector Notation Part 2
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Projectile Motion with Unit Vectors Part 1
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Projectile Motion with Unit Vectors Part 2
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Projectile Motion with Ordered Set Notation
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Centripetal Acceleration Part 1
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Centripetal Acceleration Part 2
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Centripetal Acceleration Part 3
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Visual Proof: a= v^2/r
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Calculus Proof that a=v^2/r
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Introduction to Angular Velocity
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Conservation of Angular Momentum
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Introduction to Newton's Law of Gravitation
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Gravitation
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Spring and Hooke's Law
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Potential Energy Stored in a Spring
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Spring Potential Energy Example (Mistake in Math)
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Harmonic Motion Part 1
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Physics - Electronics
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Mod-01 P-N Diode
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Mod-01 P-N Junction/Diode (Contd.)
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Mod-01 P-N Diode (Contd.)
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Mod-01 Diode Application
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Mod-02 Transistors
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Mod-02 Reverse - Bias (Contd.)
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Mod-02 Transistors (Continue)
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Mod-02 Transistors (Contd.)
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Mod-02 Biasing A Transistor Unit 2 Contd.
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Mod-02 Biasing of Transistor
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Mod-03 H and R Parameters and Their Use In Small Amplifiers
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Mod-03 Small Signal Amplifiers Analysis Using H - Parameters
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Mod-03 Small Signal Amplifiers Analysis Using R - Parameters
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Mod-03 R - Analysis (Contd.)
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Mod-03 Lecture-15-Common Collector(Cc) Amplifier (Contd.)
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Physics for Future Presidents
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Atoms and Heat
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Atoms and Heat II
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Gravity and Satellites
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Gravity and Satellites II
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Radioactivity
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Radioactivity II
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Nukes
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Review Session
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Electricity and Magnetism
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Electricity and Magnetism II
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Waves I
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Waves II
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Light I
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Light II
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Invisible Light I
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Invisible Light II
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Quantum I
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Quantum II
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Quantum III
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Quantum IV
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Review Session III
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Universe I
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Universe II
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Review Session IV
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Physics in the 111 Lab Experiments
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Zeeman Effect
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Beta Ray Experiment
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Brownian Motion in Cells
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BSC Equipment Introduction
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Bubble Chamber
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Co2 Laser Experiment
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Gamma Ray Experiment
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Holography Experiment
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Introduction to Error Analysis
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Laboratory and Radiation Safety
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Atomic Physics
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Energy Levels
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Energy Levels Continued
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Light Sources and Detectors
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Optical Instruments
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Transitions
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Laser Introduced Florescence and Raman Scattering
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Low Light Signals
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Introduction to Nonlinear Spectroscopy and Magneto-Optics
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Magneto Nonlinear Optics and Faraday Effect
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Atom Trapping MOT
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Non-Linear Dynamics (Chaos)
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Optical Pumping
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Optical Tweezers OTZ
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Hall Effect in Semiconductor
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X-Ray Crystallography
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Principles of Chemical Science, Advanced Track
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Atomic Theory of Matter (Part 2)
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Discovery of Nucleus (Part 2)
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Wave-Particle Duality of Radiation and Matter
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Particle-Like Nature of Light (Part 2)
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Matter as a Waves
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Schrödinger Equation for H Atom
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P Orbitals (Part 2)
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Hydrogen Atom Wavefunctions (Part 2)
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Electronic Structure of Multielectron Atoms (Part 2)
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Periodic Trends in Elemental Properties (Part 2)
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Why Wavefunctions are Important?
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Ionic Bonds - Classical Model and Mechanism
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Kinetic Theory - Behavior of Gases
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Distribution Molecular Energies
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Internal Degrees of Freedom
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Intermolecular Interactions
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Polarizability
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Thermodynamics and Spontaneous Change
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Molecular Description of Acids and Bases
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Lewis and Bronsted Acid-Base Concepts
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Titration Curves and pH Indicators
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Electrons in Chemistry: Redox Processes
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Cell Potentials and Free Energy
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Theory of Molecular Shapes
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Valence Bond Theory
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Molecular Orbital Theory (Part 2)
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Molecular Orbital Theory for Diatomic Molecules
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Molecular Orbital Theory for Polyatomic Molecules
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Crystal Field Theory (Part 1)
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Crystal Field Theory (Part 2)
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Color and Magnetism of Coordination Complexes
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Coordination Complexes and Ligands
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Ligand Substitution Reactions: Kinetics
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Bonding in Metals and Semiconductors
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Nuclear Chemistry and the Cardiolite Story
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Principles of Chemical Science, Normal Track
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Atomic Theory of Matter (Part 1)
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Discovery of Nucleus (Part 1)
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Wavelike Properties of Radiation
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Particle-like Nature of Light (Part 1)
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Matter As a Wave
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The Hydrogen Atom
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Hydrogen Atom Wavefunctions (Part 1)
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P Orbitals (Part 1)
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Electronic Structure of Multielectron Atoms (Part 1)
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Periodic Trends in Elemental Properties (Part 1)
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Covalent Bonds
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Lewis Diagrams
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Breakdown of Octet Rule
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Molecular Orbital Theory (Part 1)
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Valence Bond Theory and Hybridization
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Hybridization and Chemical Bonding
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Bond Energies / Bond Enthalpies
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Free Energy of Formation
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Chemical Equilibrium
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Chemical Equilibrium (cont.)
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Acid-Base Equilibrium
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Acid-Base Equilibrium (cont.)
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Acid-Base Equilibrium: Titrations
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Acid Base Titrations and Oxidation/Reduction
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Oxidation/Reduction
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Oxidation/Reduction (cont.)
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Transition Metals 1
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Transition Metals 2: Crystal Field Theory
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The Shapes of Molecules: VSEPR Theory
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Kinetics 1
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Kinetics 2
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Kinetics 3
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Kinetics 4
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Kinetics 5: Catalysis
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Review for Principles of Chemical Science, Normal Track
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Transition Metals 3
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