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OpenStem
@openstem · Joined Jul 2026
7420 public items8 groups
Collection4 items
01Chemistry · L4 · Hess's Law Calculations
02Chemistry · L4 · Hess's Law calculations: cycles, scaling, and the Born–Haber cycle
03Chemistry · L4 · Born–Haber cycle for NaCl
+1 moreChemistry · L4 · Hess's Law Calculations
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Chemistry · L4 · Hess's Law CalculationsCollection4 items
01Chemistry · L4 · Cell Notation and Concentration Cells
02Chemistry · L4 · Cell Notation and Concentration Cells
03Chemistry · L4 · Ion flow direction in a concentration cell
+1 moreChemistry · L4 · Cell Notation and Concentration Cells
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Chemistry · L4 · Cell Notation and Concentration CellsCollection4 items
01Chemistry · L4 · Back Titration
02Chemistry · L4 · Back Titration: The Excess-and-Subtract Method
03Chemistry · L4 · Choosing Back Titration Over Direct Titration
+1 moreChemistry · L4 · Back Titration
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Chemistry · L4 · Back TitrationCollection4 items
01Chemistry · L4 · Periodic Anomalies
02Chemistry · L4 · Periodic Anomalies
03Chemistry · L4 · Lanthanide Contraction — Zr vs Hf Radii
+1 moreChemistry · L4 · Periodic Anomalies
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Chemistry · L4 · Periodic AnomaliesCollection4 items
01Chemistry · L4 · Systematic Qualitative Inorganic Analysis
02Chemistry · L4 · Systematic Qualitative Inorganic Analysis
03Chemistry · L4 · Anion tests: sulfate, carbonate, nitrate
+1 moreChemistry · L4 · Systematic Qualitative Inorganic Analysis
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Chemistry · L4 · Systematic Qualitative Inorganic AnalysisCollection4 items
01Chemistry · L4 · The Steady-State Approximation
02Chemistry · L4 · The Steady-State Approximation
03Chemistry · L4 · Steady-State Approximation vs the Rate-Determining-Step Shortcut
+1 moreChemistry · L4 · The Steady-State Approximation
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Chemistry · L4 · The Steady-State ApproximationCollection4 items
01Chemistry · L4 · Faraday's Laws of Electrolysis
02Chemistry · L4 · Faraday's Laws of Electrolysis: quantifying charge, moles of electrons, and mass deposited
03Chemistry · L4 · Electroplating setup: which electrode gains mass
+1 moreChemistry · L4 · Faraday's Laws of Electrolysis
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Chemistry · L4 · Faraday's Laws of ElectrolysisCollection4 items
01Chemistry · L4 · Instrumental Chromatography — HPLC and GC
02Chemistry · L4 · Instrumental Chromatography — HPLC and GC
03Chemistry · L4 · Gas Chromatography (GC) Pipeline
+1 moreChemistry · L4 · Instrumental Chromatography — HPLC and GC
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Chemistry · L4 · Instrumental Chromatography — HPLC and GCCollection5 items
01Chemistry · L4 · Blast Furnace and Electrolytic Refining
02Chemistry · L4 · Blast Furnace and Electrolytic Refining
03Chemistry · L4 · Blast Furnace Flux: Limestone to Slag
+2 moreChemistry · L4 · Blast Furnace and Electrolytic Refining
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Chemistry · L4 · Blast Furnace and Electrolytic RefiningCollection4 items
01Chemistry · L4 · EDTA Complexometric Titration
02Chemistry · L4 · EDTA Complexometric Titration
03Chemistry · L4 · EDTA's six donor atoms wrapping a single metal ion
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Chemistry · L4 · EDTA Complexometric TitrationCollection4 items
01Chemistry · L4 · Acid-Base Titration Curves & Indicator Selection
02Chemistry · L4 · Titration curve shapes, the half-equivalence point, and indicator selection
03Chemistry · L4 · Strong Acid-Strong Base Titration Curve
+1 moreChemistry · L4 · Acid-Base Titration Curves & Indicators
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Chemistry · L4 · Acid-Base Titration Curves & IndicatorsCollection3 items
01Chemistry · L4 · Lattice Energy: Trends, the Born-Lande Equation, and the Kapustinskii Equation
02Chemistry · L4 · Lattice energy: what controls its size, and two ways to calculate it
03Chemistry · L4 · Lattice Energy, Born-Lande & Kapustinskii — 5 Q
Chemistry · L4 · Born-Haber & Lattice Energy
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Chemistry · L4 · Born-Haber & Lattice EnergyCollection4 items
01Chemistry · L4 · Colorimetry & the Beer-Lambert Law
02Chemistry · L4 · Colorimetry and the Beer-Lambert law
03Chemistry · L4 · Beer-Lambert calibration curve
+1 moreChemistry · L4 · Colorimetry & Beer-Lambert Law
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Chemistry · L4 · Colorimetry & Beer-Lambert LawCollection4 items
01Chemistry · L4 · Effusion, Diffusion & Graham's Law
02Chemistry · L4 · Effusion, diffusion, and Graham's law
03Chemistry · L4 · Relative effusion rate vs molar mass (Graham's Law)
+1 moreChemistry · L4 · Effusion, Diffusion & Graham's Law
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Chemistry · L4 · Effusion, Diffusion & Graham's LawCollection3 items
01Chemistry · L4 · Heterogeneous Equilibria & Kp
02Chemistry · L4 · Heterogeneous equilibria: omitted phases, Kp, and the Kp–Kc relationship
03Chemistry · L4 · Heterogeneous Equilibria & Kp — 5 Q
Chemistry · L4 · Heterogeneous Equilibria & Kp
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Chemistry · L4 · Heterogeneous Equilibria & KpCollection4 items
01Chemistry · L4 · Mass Spectrometry: EI Fragmentation Patterns
02Chemistry · L4 · Mass spectrometry fragmentation: molecular ions, alpha cleavage, and isotope patterns
03Chemistry · L4 · Mass Spectrometry Fragmentation — 5 Q
+1 moreChemistry · L4 · Mass Spectrometry Fragmentation
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Chemistry · L4 · Mass Spectrometry FragmentationCollection6 items
01Chemistry · L4 · Organic Synthesis Routes & Retrosynthetic Analysis
02Chemistry · L4 · Retrosynthetic analysis and a worked multi-step synthesis
03Chemistry · L4 · Organic Synthesis Routes — 5 Q
+3 moreChemistry · L4 · Organic Synthesis Routes
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Chemistry · L4 · Organic Synthesis RoutesCollection3 items
01Chemistry · L4 · Balancing Redox Equations & Redox Titrations
02Chemistry · L4 · Balancing redox equations by half-reactions, and redox titrations
03Chemistry · L4 · Balancing Redox Equations & Redox Titrations — 5 Q
Chemistry · L4 · Redox Titrations & Balancing
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Chemistry · L4 · Redox Titrations & BalancingCollection3 items
01Chemistry · L4 · Thermochemistry: Calorimetry Calculations
02Chemistry · L4 · Calorimetry calculations: q = mcΔT, calorimeter types, and ΔH vs ΔU
03Chemistry · L4 · Calorimetry Calculations — 5 Q
Chemistry · L4 · Thermochemistry: Calorimetry Calculations
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Chemistry · L4 · Thermochemistry: Calorimetry CalculationsCollection12 items
01Chemistry · L5 · Quantum Chemistry & MO Theory
02Chemistry · L5 · Advanced Organic Mechanisms & Retrosynthesis
03Chemistry · L5 · Chemical Kinetics: Eyring & Arrhenius Equations
+9 moreChemistry · L5 · Quantum & Physical Chemistry
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Chemistry · L5 · Quantum & Physical ChemistryCollection5 items
01Chemistry · L5 · Statistical Thermodynamics
02Chemistry · L5 · Statistical Thermodynamics: Boltzmann Distribution, Partition Functions & Entropy
03Chemistry · L5 · Boltzmann Populations: Low T vs High T
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Chemistry · L5 · Statistical ThermodynamicsCollection5 items
01Chemistry · L5 · Ligand Field Theory
02Chemistry · L5 · Ligand Field Theory: Spectrochemical Series, Spin State, and Jahn–Teller Distortion
03Chemistry · L5 · Spectrochemical Series — Weak-Field to Strong-Field Ligands
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Chemistry · L5 · Ligand Field TheoryCollection5 items
01Chemistry · L5 · Organometallic Chemistry: Electron Counting & Elementary Steps
02Chemistry · L5 · Organometallic Catalytic Cycles: The 18-Electron Rule in Action
03Chemistry · L5 · Elementary Steps of Organometallic Catalysis
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Chemistry · L5 · Organometallic ChemistryCollection5 items
01Chemistry · L5 · Computational Chemistry & DFT Basics
02Chemistry · L5 · Computational Chemistry & DFT Basics
03Chemistry · L5 · Choosing a Computational Method
+2 moreChemistry · L5 · Computational Chemistry
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Chemistry · L5 · Computational ChemistryCollection6 items
01Chemistry · L5 · Marcus Theory & Electron Transfer Kinetics
02Chemistry · L5 · Marcus Theory: Why and How Fast Electron Transfer Happens
03Chemistry · L5 · The three factors that set the electron-transfer rate
+3 moreChemistry · L5 · Marcus Theory & Electron Transfer
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Chemistry · L5 · Marcus Theory & Electron TransferCollection6 items
01Chemistry · L5 · Tg, Tm & Crystallinity
02Chemistry · L5 · Chain Structure → Bulk Properties
03Chemistry · L5 · Glass Transition, Crystallinity & Chain-Structure–Property Control
+3 moreChemistry · L5 · Polymer Science & Materials Chemistry
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Chemistry · L5 · Polymer Science & Materials ChemistryCollection6 items
01Chemistry · L5 · 2D NMR: COSY & HSQC
02Chemistry · L5 · Karplus Equation & Coupling-Constant Analysis
03Chemistry · L5 · Advanced NMR: 2D Techniques & Coupling Analysis
+3 moreChemistry · L5 · Advanced NMR: 2D Techniques
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Chemistry · L5 · Advanced NMR: 2D TechniquesCollection5 items
01Chemistry · L5 · Photochemistry
02Chemistry · L5 · Photochemistry: The Jablonski Diagram
03Chemistry · L5 · Jablonski Diagram: Photophysical Decay Pathways
+2 moreChemistry · L5 · Photochemistry
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Chemistry · L5 · PhotochemistryCollection7 items
01Chemistry · L5 · Supramolecular Chemistry: Foundations
02Chemistry · L5 · Supramolecular Chemistry: Preorganization & Design
03Chemistry · L5 · Supramolecular Chemistry: Host–Guest Recognition & Preorganization
+4 moreChemistry · L5 · Supramolecular Chemistry
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Chemistry · L5 · Supramolecular ChemistryCollection5 items
01Chemistry · L5 · Green Chemistry — Sustainable Catalysis
02Chemistry · L5 · Green Chemistry — Sustainable Catalysis: the E-factor, asymmetric catalysis, and green solvents
03Chemistry · L5 · Catalytic asymmetric synthesis vs racemic resolution
+2 moreChemistry · L5 · Green Chemistry — Sustainable Catalysis
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Chemistry · L5 · Green Chemistry — Sustainable Catalysis