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Part B
The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 460. g of pure
Cu?
Express your answer to three significant figures and include the appropriate units.
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Submit Previous Answers Correct Part B The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 460. g of pure Cu? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) ? Value Units Submit Next> Provide Feedback P Pearson Permissions | Contact Us Privacy Policy Copyright O 2019 Pearson Education Inc. All rights reserved. | Terms of Use F12 FI1 F10 F9 FR

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Expert Answer

Step 1

Known:

Molar mass of CuFeS2 = 183.6g/mol

Molar mass of Cu = 63.55g/mol

No. of mol of Cu   = mass / molar mass

= 460 / 63.55

= 7.23 moles

1 mole of CuFeS2gives 1 mole of Cu,

So, the number of moles of CuFeS2 = moles of Cu

                   ...

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