Molecule Maker is a pair of online bioinformatic calculators that return the required mass or molarity of a substance based upon its molecular weight and the total solution volume.
The formulas used for calculation mass or molarity:
Mass (g) = Concentration (mol/L) * Volume (L) * Formula Weight (g/mol)
Molarity (mol/L) = Mass (g) / Volume (L) * Formula Weight (g/mol)
This program enables the the user to select a wide range of molarity, volume and mass. Values can be inputted for the desired molarity, mass of solute, total solution volume and molecular weight.