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Topic: Help Finding the Empirical Formula  (Read 604 times)

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Offline Paanta

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Help Finding the Empirical Formula
« on: April 29, 2021, 11:29:03 AM »
This is a question that I got for Chemistry Homework:

Find the empirical formula for the following compounds: 69.94% Fe, 30.06% O

Here is my answer:

Fe0.6994/0.3006O0.3006/0.3006

(Fe2.33O1)*3

Final Result: Fe7O3

Is this right? If not can someone please tell me what I did wrong?
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Offline Borek

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Re: Help Finding the Empirical Formula
« Reply #1 on: April 29, 2021, 12:13:19 PM »
You need to follow molar ratio, not mass ratio.
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Offline Orcio_87

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Re: Help Finding the Empirical Formula
« Reply #2 on: April 29, 2021, 01:06:15 PM »
Quote
Find the empirical formula for the following compounds: 69.94% Fe, 30.06% O
Fe7O3 would be too simple. I think that this is the mass concentration (100 g of compound contains 69,94 g Fe and 30,06 g O).
« Last Edit: April 29, 2021, 01:17:49 PM by Orcio_Dojek »
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