help please i dont understand how to do this

Consider the reaction. MnS(s)+2HCl(aq)MnCl2(aq)+H2S(g) If the small amount of MnS is combined with the large amount of HCl, what is the mass of the products? The mass of any excess reactants will also be included in this total. mass: empty flask - 4009 empty beakes - 2509 small amount flask - 404.35g lacge amount fiask - 408.709 Small amount beaker - 300g arge amount beakec- 350g