More Challenging Questions
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Copper is an important metal in the U.S. economy. Most of it is mined in the form of the mineral chalcopyrite, CuFeS2.
(a) To obtain one metric ton (1000. kilograms) of copper metal, how many metric tons of chalcopyrite would you have to mine?
(b) If the sulfur in chalcopyrite is converted to SO2, how many metric tons of the gas would you get from one metric ton of chalcopyrite?
(c) Copper crystallizes as a face-centered cubic lattice. Knowing that the density of copper is 8.95 g/cm3, calculate the radius of the copper atom.
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