5.2 mol of solid sodium is reacted with 2.8 mol of fluorine to form sodium fluoride as shown in the eqn below. Calculate the theoretical yield of sodium fluoride in moles.
8.0 mol The Law of Conservation of Mass states that mass cannot be created nor destroyed, so the amount of products has to equal the mass of the reactants 5.2 mol + 2.8 mol = 8.0 mol