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 LiC7H5O2 to moles
grams Na2S2O7 to moles
grams PCl3 to moles
grams YCl3 to moles
grams Vanadium to moles
grams Cyanocobalamin to moles
grams Uranium(IV, V) Oxide to moles
grams Cesium Iodate to moles
grams Bromine Monofluoride to moles
molar mass of TiBr2
molar mass of BN
molar mass of EuCl2
molar mass of SO2Cl2
molar mass of Magnesium
molar mass of Iron(II) Iodide
molar mass of Copper(II) Borate
molar mass of Thorium Dioxide
molar mass of Iron(II) Chloride Tetrahydrate