Chem Achiever question !help!

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Carrie22

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What mass of chromium is theoretically obtainable from 1.00 kg of ore containing 76% of Cr2O3?


A. 26g
B. 52g
C. 260g
D. 520g
E. 600g

I did this:
(.76)(1000g ore)(1 mole ore/152g ore)(5mol Cr2O3/1mol ore)(2 mol Cr2/1mol Cr2O3)(104g Cr2/1mol Cr2)
What is wrong with this setup?? when they ask for the mass of chromium is does that mean only Cr not Cr2 right? help I'm freaking out!:scared:
 
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