βοΈ General Chemistry Calculators
Moles, stoichiometry, gas laws, atoms and thermochemistry. Browse 36 free general chemistry calculators, each with the formula, a worked example and an interactive chart.
Molar Mass CalculatorCalculate the molar mass of any chemical formula.Grams to Moles CalculatorConvert mass of a substance to moles.Moles to Grams CalculatorConvert moles of a substance to grams.Avogadro's Number Particle CalculatorConvert moles to number of atoms or molecules.Percent Composition by Mass CalculatorFind mass percent of one element in a compound.Empirical Formula Ratio CalculatorFind mole ratio of two elements from mass data.Limiting Reagent CalculatorIdentify the limiting reactant for A + B β product.Theoretical Yield CalculatorFind product mass formed from a limiting reactant.Percent Yield CalculatorCompare actual and theoretical yield.Stoichiometry Mass-to-Mass CalculatorConvert grams of reactant to grams of product with coefficients.Gas Volume at STP CalculatorConvert moles of gas to volume at standard conditions.Molarity of a Pure Liquid CalculatorFind the molar concentration of a pure liquid.Molar Mass from Gas Density CalculatorFind the molar mass of an unknown gas from density.Graham's Law of Effusion CalculatorCompare effusion rates of two gases.Dalton's Law of Partial Pressures CalculatorFind the partial pressure of each gas in a mixture.Van der Waals Real Gas CalculatorEstimate real gas pressure using the van der Waals equation.Average Atomic Mass CalculatorCompute atomic mass from isotope abundances.Electron Capacity of Shells CalculatorFind the maximum electrons in a shell and subshell count.Rydberg Formula CalculatorFind wavelength of a hydrogen-like spectral line.Reaction Enthalpy from Bond Energies CalculatorEstimate reaction enthalpy from bonds broken and formed.Hess's Law Enthalpy CalculatorSum step enthalpies to find the overall reaction enthalpy.Standard Enthalpy of Reaction CalculatorCompute ΞHΒ° from enthalpies of formation.Gibbs Free Energy CalculatorFind spontaneity from enthalpy, entropy and temperature.Equilibrium Constant from ΞG CalculatorFind K from standard Gibbs free energy.Calorimeter Heat CalculatorFind heat released from the temperature change of water in a calorimeter.Dilution Calculator (C1V1 = C2V2)Find how much stock solution to dilute.Atom Economy CalculatorMeasure how much reactant mass ends up in the desired product.PPM to Percent and mg/L ConverterConvert parts per million to percent and mg/L.Mass Percent Concentration CalculatorFind mass percent of a solute in a solution.Hydrate Water Percentage CalculatorFind the percent water in a hydrated salt.Fuel Combustion Energy CalculatorEstimate energy released by burning a fuel.COβ from Burning Fuel CalculatorCompute carbon dioxide produced from burning carbon fuel.Bond Polarity (Electronegativity Difference) CalculatorClassify a bond from the electronegativity difference.Coulomb Lattice Energy Estimate CalculatorEstimate ionic lattice attraction energy.Gas Diffusion Time Ratio CalculatorCompare time for two gases to travel the same distance.Isotope Neutron Count CalculatorCount protons, neutrons and electrons of an isotope or ion.
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