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Topics Organic Chemistry Practice Problems Study Guides Quizzes Solutions CS Benefits Log In Register Menu Topics Organic Chemistry Practice Problems Study Guides Quizzes Solutions CS Benefits Log In Register General Chemistry Topics Study Guides Quizzes Identify the quantum numbers for the highlighted electron. Practice Problems Solutions to Over 1000 Practice Questions Sign Up and Get Now Chemistry and Math Significant Figures Significant Figures in Addition, Subtraction Multiplication, and Division Significant Figures Practice Problems Converting Units With Conversion Factors Dimensional Analysis Conversion Factors and Dimensional Analysis Practice Problems Density Practice Problems The Components of Matter Pure Substances, Mixtures, Elements, and Compounds Heterogeneous and Homogeneous Mixtures States of Matter: Solid, Liquid, Gas, and Plasma Atoms, Molecules, and Ions Subatomic particles and Isotopes What are Isotopes? How To Calculate The Number of Protons, Neutrons, and Electrons The Average Atomic Mass Calculating The Percent Abundance of Each Isotope Naming Monatomic and Polyatomic Ions Naming Ionic Compounds Writing Chemical Formulas For Ionic Compounds Naming Covalent Compounds Naming Acids and Bases Atomic and Molecular Masses Stoichiometry The Mole and Molar Mass How To Calculate The Molar Mass How To Convert Grams To Moles Grams to Molecules and Molecules to Mass How To Convert Grams To Number of Atoms Mass, Moles, and Number of Particles Practice Percent Composition and Empirical Formula Percent Composition and Empirical Formula Practice Problems Stoichiometry of Chemical Reactions Limiting Reactant How To Find The Amount of Excess Reactant Limiting Reactant Practice Problems Reaction/Percent Yield Stoichiometry Practice Problems Mass, Moles, and Number of Particles Quiz The Stoichiometry of Chemical Reactions Quiz Reactions in Aqueous Solutions Solutions Strong and Weak Electrolytes Dissociation of Ionic Compounds Molecular, Ionic, and Net Ionic Equations Molarity Dilution Ion Concentration Precipitation Reactions Definitions of Acids and Bases Naming Acids and Bases Acid-Base Reactions Displacement Reactions Predicting The Products of Chemical Reactions Stoichiometry of Reactions in Aqueous Solutions Acid-Base Titrations Oxidation State Oxidation-Reduction (Redox) Reactions Oxidizing and Reducing Agents Balancing Redox Reactions Oxidation State Practice Problems Reactions in Aqueous Solutions – Practice Problems Reactions in Aqueous Solutions Quiz Gases Boyle’s Law Charle’s Law Gay-Lussac’s Law Avogadro’s Law The Ideal Gas Law Celsius or Kelvin Ideal-Gas Laws Combined Gas Law Equation How to Know Which Gas Law Equation to Use Molar Mass and Density of Gases Graham’s Law of Effusion and Diffusion Graham’s Law of Effusion Practice Problems Dalton’s Law of Partial Pressures Mole Fraction and Partial Pressure of the Gas Gases in Chemical Reactions Gases-Practice Problems A Multiple-Choice Quiz on Gases Thermochemistry Energy Related to Heat and Work Endothermic and Exothermic Processes Heat Capacity and Specific Heat Heat Capacity Practice Problems Heat and Phase Change Diagrams What is Enthalpy Constant-Pressure Calorimetry Bomb calorimeter – Constant Volume Calorimetry Calorimetry Practice Problems Stoichiometry and Enthalpy of Chemical Reactions Hess’s Law and Enthalpy of Reaction Hess’s Law Practice Problems Standard Enthalpies of Formation Enthalpy of Reaction from Enthalpies of Formation Thermochemistry Practice Problems Thermochemistry Quiz Electronic Structure of Atoms Atomic Orbitals Electron Configurations Electron Configurations of Ions Orbital Diagrams Aufbau’s Principle, Hund’s Rule, and Pauli’s Exclusion Principle Hund’s Rule Pauli Exclusion Principle Quantum Numbers ( n , l , m l , m s ) Bohr Model of the Hydrogen Atom Rydberg Formula The Photoelectric Effect Calculating The Energy of a Photon Effective Nuclear Charge Atomic Radius Ionic Radius Ionization Energy Electron Affinity Energy, Wavelength, and Frequency Practice Problems Electronic Structure of Atoms Quiz Periodic Table and Periodic Trends Concepts of Chemical Bonding Lewis Dot Symbols Valence Electrons The Ionic Bond The Covalent Bond Sigma and Pi Bonds Electronegativity and Bond Polarity The Octet Rule Formal Charges Lewis Structures and the Octet Rule Lewis Structures Practice Problems Resonance Structures Chemical Bonding and Lewis Structures Quiz Molecular Geometry The VSEPR Model VSEPR Theory Practice Problems Hybridization of Atomic Orbitals sp , sp 2 , sp 3 , sp 3 d , and sp 3 d 2 Hybridization Practice Problems Geometry and Hybridization Quiz Intermolecular Forces in Liquids and Solids Properties of Solutions Molality Colligative Properties Vapor Pressure Lowering Boiling Point Elevation Freezing Point Depression Osmotic Pressure Molarity, Molality, and Other Concentrations – Practice Problems Colligative Properties Practice Problems Chemical Kinetics Reaction Rate Rate Law and Reaction Order How to Determine the Reaction Order Integrated Rate Law The Half-Life of a Reaction Half-Life and Radioactivity Practice Problems First-Order Reactions Second-Order Reactions Zero-Order Reactions Determining the Reaction Order Using Graphs Units of Rate Constant k How Are Integrated Rate Laws Obtained Activation Energy The Arrhenius Equation Chemical Kinetics Practice Problems Chemical Kinetics Quiz Chemical Equilibrium Chemical Equilibrium Equilibrium Constant K p and Partial Pressure K p and K c Relationship K Changes with Chemical Equation Equilibrium Constant K from Two Reactions Reaction Quotient – Q ICE Table – Calculating Equilibrium Concentrations ICE Table Practice Problems Le Châtelier’s principle Le Châtelier’s Principle Practice Problems Chemical Equilibrium Practice Problems Chemical Equilibrium Quiz Acids and Bases Definitions of Acids and Bases Acid-Base Reactions Acid-Base Titrations Conjugate Acid and Conjugate Base Autoionization of Water and K w The pH and Acidity Acid Strength, K a , and p K a Base Strength, K b, and p K b Ka, pKa, Kb, and p K b Relationship The pH of a Strong Acid and Base pH + pOH = 14 The pH of a Weak Acid The pH of a Weak Base The pH of Polyprotic Acids The acidity of a Salt Solution The pH of a Salt Solution The pH of Salts With Acidic Cations and Basic Anions pH Practice Problems Acids and Bases Practice Problems Acids and Bases Quiz Acid-Base and Solubility Equilibria Buffer Solutions The Henderson–Hasselbalch Equation The pH of a Buffer Solution Preparing a Buffer with a Specific pH The Common Ion Effect The pH and p K a Relationship Strong Acid–Strong Base Titrations Titration of a Weak Acid by a Strong Base Titration of a Weak Base by a Strong Acid Titration of Polyprotic Acids Buffer Solutions Practice Problems K sp and Molar Solubility The Effect of a Common Ion on Solubility The Effect of pH on Solubility Will a Precipitate Form? K sp and Q K sp and Molar Solubility Practice Problems Chemical Thermodynamics Standard Entropy Change (? S o rxn ) of a Reaction The Gibbs Free Energy The Effect of ?H, ?S, and T on ?G – Spontaneity Entropy and State Change Entropy Changes in the Surroundings ? G o rxn from the Free Energies of Formation Gibbs Free Energy and Hess’s Law Gibbs Free Energy Under Nonstandard Conditions Gibbs Free Energy and Equilibrium Constant Entropy, Enthalpy, and Gibbs Free Energy Practice Problems Chemical Thermodynamics Quiz Electrochemistry Balancing Redox Reactions Galvanic Cells How to Calculate Standard Cell Potential The Correlation Between E o cell, ΔG°, and K Nernst Equation Nernst Equation Practice Problems Concentration Cells Electrolytic Cells Electrolysis Electrolysis of Water Calculating the Mass of Metal in Electroplating Cell Potential Practice Problems E o , ΔG o , K – Practice Problems Electrochemistry Practice Problems Electrochemistry Quiz Nuclear Chemistry Alpha Particles, Beta Particles, and Gamma Rays Balancing Nuclear Reactions Carbon Dating Practice Problems Half-Life and...