The mineral enargite is 48.41% Cu, 19.02% As, and 32.57% S by mass. What is the empirical formula of enargite? | Stoichiometry

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The mineral enargite is 48.41% Cu, 19.02% As, and 32.57% S by mass. What is the empirical formula of enargite?

CuAsS

Cu₂AsS₂

Cu₃AsS₄

✓ Correct

Cu₄AsS₃

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