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How many kilograms of the rock must be processed to obtain 2.0 kg of Pb ?

How many kilograms of the rock must be processed to obtain 2.0 kg of Pb ?
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How many kilograms of the rock must be processed to obtain 2.0 kg of Pb ?

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User Arnaud Gueras
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1 Answer

3 votes
15 kilogram of the rock must be processed.
answered
User Sarquella
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