This category of measurement units is defined by the "amount of substance" type, which is an SI base quantity.
The SI base unit for amount of substance is the mole.
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is "mol."
grams Na2O to moles
grams Cl2O3 to moles
grams CuC2H3O2 to moles
grams CoC15H21O6 to moles
grams Xenon to moles
grams Mercury(II) Sulfate to moles
grams Beryllium Acetate to moles
grams Tellurium Trioxide to moles
grams Gold(I, III) Fluoride to moles
molar mass of HgC2N2O2
molar mass of FeI3
molar mass of Cu2Te
molar mass of Li3P
molar mass of Fluorine
molar mass of Potassium Xanthogenate
molar mass of Aluminium Nitrate
molar mass of Osmium(VI) Oxide
molar mass of Bismuth(III) Fluoride