# CHEMISTRY

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Fe2O3 + 3CO= 2Fe + 3CO2, SUPPOSE THAT 1.64kg OF Fe ARE OBTAINED FROM A 2.62kg SAMPLE OF Fe2O3(ORE). ASSUMING THE REACTION IS COMPLETE, WHAT IS THE PERCENT PURITY OF THE Fe2O3 IN THE ORIGINAL SAMPLE?

• CHEMISTRY -

one needs one mole of ironIIoxide to make two moles of iron.

MolesIron obtained: 1640/atomicmassFe

molesFe2O3: one half that.

grams Fe2O3: moles*molmass

percent purity: gramsFe2O3/2620

• CHEMISTRY -

85.12 grams i think .

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