## Chemistry and Chemical Reactivity (9th Edition)

$1.85\ kg$
Number of moles of $Cu_2S$: $3000.\ g\div 159.15\ g/mol= 18.85\ mol$, same as sulfuric acid from stoichiometry. Theoretical yield: $18.85\ mol \times 98.07\ g/mol= 1848.7\ g=1.85\ kg$