Corban E. answered 06/03/21
AP Chemistry Tutor and Former Teacher (Gen Chem, IB, O-Level, A-Level)
Find the molar mass. Add up the masses of the elements from the periodic table.
CaCl2 is made of Ca+2Cl
mass of Ca=40.08
mass of Cl=35.45
molar mass=Ca+2Cl=40.08+2(35.45)=110.98 g/mol
moles = grams ÷ molar mass
moles = 610.39 g ÷ 110.98g/mol
=5.5 mol CaCl2