there are four f atoms on the products side.
since two more f atoms are required on the reactant side, you multiply the number of f2 molecules by two.
so 2 should be placed in front of f2
answer: mass of 1 mol of gold (au) is 197g , of aluminum chloride is 133.5 g and of glucose is 180 g
explanation: mass of 1 mole of a substance is called its molar mass.
a) 1 mole of contains and weigh 197g.
b) 1 mole of will weigh=
thus mass of 1 mole of will be
c) 1 mole of will weigh=
1 mole of will weigh=