Chemistry calculators
Each calculator writes out the arithmetic line by line, so you can compare to your own work and see where the answer came from.
general
Molar Mass Calculator
Calculate molecular weight from any chemical formula
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Percent Composition Calculator
Calculate mass percent of each element in a compound
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Empirical Formula Calculator
Find empirical and molecular formula from mass percentages
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Electron Configuration Calculator
Generate electron configurations and orbital diagrams
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Equilibrium Calculator
Calculate reaction quotient Q and equilibrium concentrations
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Oxidation State Calculator
Determine oxidation numbers for atoms in a compound
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solutions
stoichiometry
gas laws
Ideal Gas Law Calculator
Solve PV = nRT for any variable
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Graham's Law Calculator
Calculate rate of effusion for gases
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Combined Gas Law Calculator
Solve P₁V₁/T₁ = P₂V₂/T₂ for any variable
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Dalton's Law Calculator
Calculate partial pressures of gas mixtures
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