Final answer:
In the chemical equation FeS + 2HCl -> FeCl₂ + H₂S, there is only one molecule of FeCl₂ produced, making the statement false.
Step-by-step explanation:
Looking at the given chemical equation FeS + 2HCl -> FeCl₂ + H₂S, we see that there is only one molecule of iron(II) chloride (FeCl₂) produced in the reaction. This means the correct answer to the statement 'In the chemical equation FeS + 2HCl -> FeCl₂ + H₂S, there are two FeCl₂ molecules.' is False.
The chemical equation is already balanced, showing a one-to-one ratio between FeS and FeCl₂. The products and reactants have subscripts that indicate the number of atoms of each element; for example, in FeCl₂, the subscript '2' after Cl indicates there are two chloride ions for each iron ion, which must have a charge of +2 to balance the charges, as in Fe²⁺.
Stoichiometry of the chemical reactions indicates the quantitative relationship between reactants and products and should not be confused with the physical quantity of substances.