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Topic: Conversion of ore to Lead problem  (Read 2198 times)

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Offline Henry1987

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Conversion of ore to Lead problem
« on: October 02, 2018, 12:42:29 AM »
Lead metal can be extracted from a mineral called galena, which contains 86.6% lead by
mass. A particular ore contains 68.5% galena by mass. If the lead can be extracted with 92.5%
efficiency, what mass of ore is required to make a lead sphere with a 5.00 cm radius? The density
of lead is 11.34g/cm3.
My final answer was 2190 grams of ore.
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Offline billnotgatez

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Re: Conversion of ore to Lead problem
« Reply #1 on: October 02, 2018, 01:36:42 AM »
Although you followed the forum rules and showed you did some work to get an answer,
I think we need to see the calculation steps.
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Offline Enthalpy

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Re: Conversion of ore to Lead problem
« Reply #2 on: October 02, 2018, 07:50:14 PM »
I doubt about the 2190g. What mass of lead do you want for the sphere? Radius versus diameter?
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