Chemistry Homework Help For College Students

Ch.1 - Intro to General Chemistry

Classification of Matter The Scientific Method Filtration Standard Deviation, Mean, Median & Mode Physical & Chemical Changes Chemical Properties Temperature Scientific Notation Metric Prefixes Significant Figures Accuracy & Precision Types of Energy Dimensional Analysis Density

Ch.2 - Atoms & Elements

Subatomic Particles Isotopes Periodic Table: Classifications Mole Concept Atomic Theory Millikan Oil Drop Experiment Thomson's Cathode Ray Tube Experiment Rutherford Gold Foil Experiment Mass Spectrometry Periodic table Charges (IGNORE) Calculating Molar Mass (IGNORE)

Ch.3 - Chemical Reactions

Empirical Formula Molecular Formula Molecular Models Combustion Analysis Polyatomic Ions Naming Ionic Compounds Naming Acids Naming Molecular Compounds Ionic and Covalent Compounds Balancing Chemical Equations Stoichiometry Limiting Reagent Percent Yield Mass Percent Functional Groups in Chemistry Theoretical Yield (IGNORE) Limiting Reactant (IGNORE)

BONUS: Lab Techniques and Procedures

Distillation & Floatation Test for Ions and Gases

BONUS: Mathematical Operations and Functions

Multiplication and Division Operations

Ch.4 - Chemical Quantities & Aqueous Reactions

Molarity Dilutions Solubility Rules Electrolytes Solution Stoichiometry Complete Ionic Equations Calculate Oxidation Numbers Redox Reactions Balancing Redox Reactions: Acidic Solutions Activity Series Types of Chemical Reactions Normality & Equivalent Weight Oxidation Reduction (Redox) Reactions (IGNORE) Oxidation Number (IGNORE) Net Ionic Equation (IGNORE)

Ch.5 - Gases

Pressure Units The Ideal Gas Law Chemistry Gas Laws Chemistry Gas Laws: Combined Gas Law Manometer Partial Pressure The Ideal Gas Law: Molar Mass The Ideal Gas Law: Density Gas Stoichiometry Collecting Gas Over Water Standard Temperature and Pressure Effusion Root Mean Square Speed Kinetic Energy of Gases Velocity Distributions Kinetic Molecular Theory Van der Waals Equation Boyle's Law (IGNORE) Charles Law (IGNORE) Ideal Gas Law (IGNORE)

Ch.6 - Thermochemistry

Nature of Energy Internal Energy Endothermic & Exothermic Reactions Thermochemical Equations Enthalpy of Formation Hess's Law Enthalpy (IGNORE)

Ch.7 - Quantum Mechanics

Wavelength and Frequency The Energy of Light Electromagnetic Spectrum Photoelectric Effect Diffraction vs Refraction De Broglie Wavelength Heisenberg Uncertainty Principle Bohr Model Bohr Equation Introduction to Quantum Mechanics Quantum Numbers: Nodes

Ch.8 - Periodic Properties of the Elements

The Electron Configuration Paramagnetism and Diamagnetism The Electron Configuration: Quantum Numbers Periodic Trend: Metallic Character Periodic Trend: Atomic Radius Periodic Trend: Ionic Radius Periodic Trend: Ionization Energy Periodic Trend: Electron Affinity Periodic Trend: Effective Nuclear Charge Periodic Trend: Cumulative Atomic Radius (IGNORE) Ionization Energy (IGNORE)

Ch.9 - Bonding & Molecular Structure

Chemical Bonds Dipole Moment Octet Rule Formal Charge Lewis Dot Structures: Neutral Compounds Resonance Structures Bond Energy Lattice Energy Born Haber Cycle

Ch.10 - Molecular Shapes & Valence Bond Theory

Electron Geometry Molecular Geometry (IGNORE) VSEPR Theory Bond Angles Hybridization Molecular Orbital Theory Delocalized Electrons MO Theory: Heteronuclear Diatomic Molecules

Ch.11 - Liquids, Solids & Intermolecular Forces

Molecular Polarity Intermolecular Forces Intermolecular Forces and Physical Properties Phase Diagram Heating and Cooling Curves Unit Cell Bragg Equation and Electron Diffraction Atomic, Ionic, and Molecular Solids Clausius-Clapeyron Equation

Ch.12 - Solutions

Solutions, Molarity and Intermolecular Forces Making Solutions Henry's Law Calculate Molarity Mass Percent Molality Mole Fraction ppm The Freezing Point Depression (IGNORE) Boiling Point Elevation Freezing Point Depression The Colligative Properties

Ch.13 - Chemical Kinetics

Rate of Reaction Average Rate of Reaction Instantaneous Rate of Change Arrhenius Equation Energy Diagram Catalyst Reaction Mechanism Rate Law Integrated Rate Law Identifying Reaction Order Collision Theory

Ch.14 - Chemical Equilibrium

Chemical Equilibrium Equilibrium Expressions ICE Chart Le Chatelier's Principle The Reaction Quotient

Ch.15 - Acid and Base Equilibrium

Identifying Acids and Bases Strong Acids and Strong Bases (IGNORE) Arrhenius Acid and Base Bronsted Lowry Acid and Base Conjugate Acids and Bases Amphoteric Lewis Acid and Base pH and pOH Strong Acid-Base Calculations Weak Acids Weak Bases Ka and Kb Ionic Salts Diprotic Acid Polyprotic Acid

Ch.16 - Aqueous Equilibrium

Buffer Henderson Hasselbalch Equation (IGNORE) Acid and Base Titration Curves Weak Acid Strong Base Titrations Weak Base Strong Acid Titrations Equivalence Point Strong Acid Strong Base Titrations Titrations of Diprotic and Polyprotic Acids Acid Base Indicators Ksp Selective Precipitation Formation Constant

Ch. 17 - Chemical Thermodynamics

Spontaneous Reaction First Law of Thermodynamics Second and Third Laws of Thermodynamics Entropy Boltzmann Equation Gibbs Free Energy

Ch.18 - Electrochemistry

Redox Reaction Balancing Redox Reaction The Nernst Equation Faraday's Constant Galvanic Cell Cell Notation Standard Hydrogen Electrode Cell Potential Nernst Equation (IGNORE) Batteries and Electricity Electroplating Electrolysis of Water & Mixture of Ions

Ch.19 - Nuclear Chemistry

Radioactive Decay Alpha Decay Beta Decay Gamma Emission Electron Capture Positron Emission Band of Stability Magic Numbers First Order Half Life Nuclear Fission Mass Defect Nuclear Fusion Nuclear Transmutation

Ch.20 - Organic Chemistry

Introduction to Organic Chemistry Structural Formula Stereoisomers Chirality Optical Isomers The Alkyl Group Naming Alkanes Naming Alkenes Naming Alkynes Organic Chemistry Nomenclature Benzene Alkane Reactions Alkenes and Alkynes Functional Groups Alcohol Reactions Carboxylic Acid Derivative Reactions Polymer

Ch.22 - Chemistry of the Nonmetals

Alkali Metals

Ch.23 - Transition Metals and Coordination Compounds

Transition Metals Transition Metals Electron Configuration Oxidation States of Transition Metals Coordination Complexes Naming Coordination Compounds Coordination Isomers Crystal Field Theory Colors of Complex Ions

Browse Homework Solutions

Q. Calculate the molar concentration of oxygen in water at 25°C for a partial pressure of 0.17 atm. The Henry's law constant for oxygen is 1.3 × 10−3 mol/L · atm. Report your answer to two significant figures.

Q. If C2F4 is a gas that dissolves in water at 298 K to the extent of 1.01×10−3 M with a partial pressure of 0.64 atm , what is its Henry's-law constant at 298 K?

Q. Henry's law constant is 0.034 mol/kg bar and 0.00060 mol/kg bar for CO2 and N2 respectively at 25 C what pressure of n2 is required to achieve the same solubility as 0.859 bar of CO2

Q. What is the molar concentration of CO2 in water at 25°C under atmospheric conditions where the partial pressure of CO2 is 0.56 atm (Henry's law constant for CO2 in water is 3.1×10-2 mol/L-atm)?

Q. You double the partial pressure of a gas over a liquid at constant temperature. Which of these statements is then true?

Q. The following table provides some information on carbon dioxide solubility in water. At 1 atm, how many moles of CO2 are released by raising the temperature of 1 liter of water from 20°C to 25°C? Express your answer to four decimal places and include the appropriate units.

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