Iron(II) sulfide reacts with hydrochloric acid according to the reaction:  FeS(s)+2HCl(aq)→FeCl2(s)+H2S(g)FeS(s)+2HCl(aq)→FeCl2(s)+H2S(g) A reaction mixture initially contains 0.216 molmol FeSFeSand 0.660 molmol HClHCl Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant is left?

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