This is my first time posting here, I hope I get some help:-)(adsbygoogle = window.adsbygoogle || []).push({});

Well here is my Information i have:

Weight of Unknown= 0.2g

# of mols of Fe(II)= 0.0005 mol

Question: Assuming that the number of atoms in Fe in the unknown compound is one and the MW(Fe)= 55.85 g/mol calculate the molecular weight og the unknown iron compound.

I've tried many things but so far i'm stuck

Any help would be great!

R

*edit*

I also have to calculate the Mass of Fe(II) I was wondering if this is the correct method i'm using:

0.0005 mol of Fe(II) x 55.85 g/mol (Fe)= 0.027925 g?

Also need to find the % Fe in the Unknown, now would the calculation be:

(0.027925 g /0.2 g) x 100?

Thanx again

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# Need Help in Calculating MW of Unknown

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