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 NaN3 to moles
grams ErS to moles
grams NBr3 to moles
grams LiN3 to moles
grams Berkelium to moles
grams Lead(II) Oxalate to moles
grams Gadolinium(II) Silicide to moles
grams Tantalum(IV) Silicide to moles
grams Thallium(I) Telluride to moles
molar mass of UF3
molar mass of NaClO
molar mass of NBr3
molar mass of Ti2(SO4)3
molar mass of Mercury
molar mass of Strontium Chloride
molar mass of Chlorine Trifluoride
molar mass of Tin(II) Telluride
molar mass of Thorium(IV) Sulfide