Question
A Copper can be commercially obtained from an ore that contains 10.0 mass percent chalcopyrite, $\mathrm{CuFeS}_{2}$, as the only source of copper. How many tons of the ore are needed to produce 20.0 tons of $99.0 \%$ pure copper?
Step 1
This can be done by multiplying the total mass of the copper by the percentage purity. In mathematical terms, this is represented as: \[ Mass_{Cu} = \frac{99}{100} \times 20 \] This gives us 19.8 tons of copper. Show more…
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