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xarqi, Generalist
Category: Homework
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Customer Question

The halogen elements are so reactive that the halides of many metals can be prepared by the direct combination of the elements. For example, iron(III) chloride can be prepared by the following reaction:
2Fe(s) + 3Cl2(g) -> 2FeCl3(s)
Calculate the mass of FeCl3 that is formed if 12.4g of iron reacts completley.
(i do not know how to type in subscripts after Cl)
Submitted: 11 years ago.
Category: Homework
Expert:  xarqi replied 11 years ago.
12.4 g of Fe represents 12.4 / 55.85 mol = 0.222 mol.
The stoichiometry tells us that for each mole of Fe, we get a
mole of FeCl3, so in this case, we will get 0.222 mol.

MW of FeCl3 is 55.85 + 3 x 35.45 = 162.2, so 0.222 mol will
have mass 0.222 x 162.2 = 36.01 g
Customer: replied 11 years ago.
Reply to xarqi's Post: thank you very much for your answer, but I am still having trouble understanding how to solve the problem. As a result i am getting extra help from my teacher to help me better understand the correct procedures to slove these types of problems. Again, thanks for your help, but I do not wish to accept your answer.
Expert:  xarqi replied 11 years ago.
How can I clarify it for you?
Customer: replied 11 years ago.
Reply to xarqi's Post: i think i am just going to get extra help from my teacher. this stuff is really difficult for me... thanks anyways though but i still would like my deposit refunded. Thanks so much for your time.
Expert:  xarqi replied 11 years ago.
Good luck with your studies.

Use the customer service contact information to request a
refund of your deposit.

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