Atom composition (simple question but hard for me)

  • Thread starter asz304
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  • #1
asz304
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Homework Statement



Fe3(Co)x, Fe is 33.26% by mass. Find the value of x.

The Attempt at a Solution



167.5425 g / 0.3326 = x ( 58.9326 g) / 0.6628

x = 5.6...

but the right answer given was x=12.

question #30:http://www.chem.mun.ca/courseinfo/c1050/Louise_Dawe/Basic%20Chemical%20Concepts%20I.pdf" [Broken]

Thanks
 
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Answers and Replies

  • #2
Borek
Mentor
29,098
3,710
Co or CO?
 
  • #3
asz304
108
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Co, cobalt.
 

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