Lactose (C12H22O11) is an organic compound of three elements: Carbon, Hydrogen, and Oxygen. The molecular weight of Lactose is 342.2978 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.
Barium chloride [BaCl2] is an inorganic compound of two elements: Barium and Chlorine. The molecular weight of Barium chloride is 208.2324 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Barium and Chlorine.