30000 tonnes of a copper ore containing 6.5% chalcopyrite was mined. Calculate the theoretical yield of copper that could be extracted from this ore (in tonnes)?

Md Ariful Islam

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Md Ariful Islam

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And thus percentage mass of copper in chalcopyrite is:

$(63.55*g*mol^-1)/((63.55+55.8+2xx32.06)*g*mol^-1)xx100%$

$34.6%$ $"by mass."$

But, the ore contains ONLY $6.5%$ by mass of copper in this ore......

And thus, the mass of copper is given by............

$(6.5)/100xx(34.6)/100xx30000*"tonnes"=675*"tonnes"$.

And of course the rest of the starting mass will either be released to the atmosphere, or end up in a mountainous pile of tailings.

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