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Chemistry

Work out amounts of substance, concentrations and simplified equilibria. Follow the calculation and the assumptions used.

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8 calculators available.

ChemistryMass, moles and particle countConvert mass into an amount in moles and a particle count using the appropriate molar mass.

ChemistryMolarity of a solutionFind the amount concentration from the dissolved amount of substance and the final solution volume.

ChemistrySolution dilution: stock volume neededCalculate the stock solution volume needed for a target concentration and a specified final volume.

ChemistryPercentage yield calculatorCompare the product mass actually obtained with the theoretically possible mass.

ChemistrypH, pOH and approximate concentrationsCalculate pOH and approximate ion concentrations from pH and the assumed ionic product of water.

ChemistryBuffer pH: Henderson–HasselbalchEstimate buffer pH from pKₐ and the concentrations of a conjugate acid–base pair.

ChemistryIdeal gas pressure calculatorCalculate absolute gas pressure from amount of substance, volume and temperature using the ideal gas law.

ChemistryBeer–Lambert absorbance and transmittanceCalculate the absorbance of a homogeneous sample and the proportion of light transmitted through it.