molecalculator

Section 05

Reaction and stoichiometry calculators

Amounts from a balanced equation: moles and grams of product from a reactant, the theoretical yield and the percent yield of a reaction.

Calculators in this section
36
Typical formula
n_B = n_A × b ÷ a
Photo collage: a conical flask with a pale blue solution swirling on a white bench next to a beaker, and a close-up of crystals forming at the bottom of a beaker.

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Everything in Reactions & Stoichiometry

PageWorks outExample result
Arrhenius Equation Calculator: Activation Energy and RateRate constant173,931.796874 s^-1
Arrhenius Equation Calculator: Activation Energy and RatesActivation energy52.906 kJ/mol
Arrhenius Equation Derivation and CalculatorRate constant k1,739.318 s^-1
Arrhenius Equation: A-Level Chemistry and CalculatorActivation energy52.91 kJ/mol
Atomic Mass Equation: Formula and Worked ExampleAtomic mass10.8110 u
Average Atomic Mass Equation and CalculatorAverage atomic mass10.81103 u
Empirical Formula Calculations: Steps and Examples
Empirical Formula Calculator and Calculation Table
Empirical Formula Calculator and Step-by-Step Method
Empirical Formula Calculator: Find the Simplest Ratio
Empirical Formula Equation: Calculate the Simplest Ratio
Empirical to Molecular Formula CalculatorMolecular formula multiplier2
Empirical vs Molecular Formula: Key Differences
Free Energy Equation: Gibbs, Helmholtz, and ExamplesGibbs free-energy change ΔG-24.9075 kJ/mol
Gibbs Standard Free Energy Equation ExplainedStandard Gibbs free energy change ΔG°-1.718 kJ/mol
Grams to Moles Equation and CalculatorAmount of substance0.1711 mol
Limiting Reagent Calculator: Find the Limiting Reactant
Linear Arrhenius Equation: Formula and CalculatorActivation energy178.046 kJ/mol
Mole Calculator From a Chemical Equation: Moles of Product From the Mole RatioAmount of B3.3069 mol
Moles Calculator: Equation, Formula, and ExamplesAmount of substance0.9992 mol
Moles Equation: Calculate Amount from Mass or ParticlesAmount of substance from mass1.0000 mol
Moles to Molecules Equation and CalculatorMolecules6.022 × 1023 molecules
Neutrons Equation: Find Neutrons in an IsotopeNeutrons12 particles
Overall Percent Yield Calculator and Formula
Percent Composition Calculator and FormulaCarbon composition37.49 %
Percent Composition Chemistry Formula and CalculatorCarbon percent by mass37.49 %
Percent Composition Formula and Worked ExamplePercent composition by mass17.76 %
Percent Yield Calculator: Actual Yield ÷ Theoretical Yield × 100Percent yield89.94 %
Percent Yield Formula in Chemistry: Calculate Reaction YieldPercent yield85.00 %
Radioactive Decay Equation: Formula and ExamplesNuclei remaining500,000.09 nuclei
Reaction Enthalpy Calculator: Find ΔH for a ReactionReaction enthalpy ΔH°-107.68 kJ/mol reaction
Theoretical Yield Calculator and Stoichiometry FormulaTheoretical yield1.8015 g
Theoretical Yield Calculator: Formula and ExampleTheoretical yield0.450 g
Theoretical Yield Formula and Worked ExampleTheoretical yield10.000 g
Theoretical Yield Formula and Worked ExampleTheoretical yield18.016 g
What Is r in the Free Energy Equation?Reaction quotient Q1.0000

Every calculator uses a standard formula and shows it, with the constants and unit factors it needs. Method and constants.