Use the Chemical Calculator to calculate the mass, volume or concentration required to prepare a solution of a compound.

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Enter molar mass: g/mol

(equivalent to molecular weight - **M. W.** or formula weight - **F. W.**)

In the following boxes, always fill all but one field and click 'Calculate'. Don't use commas to separate thousands.

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ForConcentration (molarity):

concentration, dissolveMass:

in the volume ofVolume: .

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Percent concentration (percentage): %

solution hasMolar concentration (molarity): concentration.

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Stock solution concentration:

Final volume:

To getFinal concentration:
concentration, use

Volume of stock solution:
of stock solution.

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Initial concentration:

Initial volume:

To getFinal concentration:
final concentration, add

Volume of solvent to add:
of solvent.

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Absorbance:

Optical path:
cm

Molar extinction coefficient:
lmol^{-1}cm^{-1}

Concentration: