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Bond Haynes
06/06/2024 · High School

2 One of the ores of copper is the mineral chalcopyrite. A laboratory analysis of a sample showed that 15.15 g of chalcopyrite had the following composition by mass: copper 5.27 g and iron 4.61 g . Sulfur is the only other element present. Use these figures to calculate the empirical formula of chalcopyrite. \( \left(A_{\mathrm{r}}: \mathrm{S}=32, \mathrm{Fe}=56, \mathrm{Cu}=64\right) \)

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The empirical formula of chalcopyrite is CuFeS2.

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