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Topic: How to find the moles of each element?  (Read 16924 times)

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Offline Caius

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How to find the moles of each element?
« on: October 21, 2012, 08:28:47 PM »
Well I have an element called NaCl (Sodium Chloride)
From my data, I have found 6.00 grams of it.
And my molar mass that I received was 58.44 g/mol
Which came from (1molNa*22.99/1molNa)+(1molCl*35.45g/1molCl) = 58.44 g/mol

But what I was confused was finding the mole of just one element.
Like for Na, how would I find the mole of just that element from the data I have?
I accidently did the same way for calculating the whole mole of the compound.
Though I thought of something else.
Would this be correct?
mol NaCl = 1molNa/1molNacl = 1 mol Na?
(I used x mol Na = mol NaCl * 1 mol Na / 1 mol NaCl) = 1 mol Na)

Thanks for responding :)
« Last Edit: October 21, 2012, 09:19:03 PM by Caius »

Offline KRuland

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Re: How to find the moles of each element?
« Reply #1 on: October 21, 2012, 10:17:29 PM »
Look like you did it right to me.

1 mol NaCl = (1 mol Na+) + (1 mol Cl-)

Offline Arkcon

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Re: How to find the moles of each element?
« Reply #2 on: October 21, 2012, 10:22:18 PM »
You know you have 6 g of NaCl, you also know the formula weight in g/mol.  You should be able to compute the moles of NaCl, and relate that to the Na in it.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline Caius

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Re: How to find the moles of each element?
« Reply #3 on: October 21, 2012, 10:30:53 PM »
Oh ok thanks!
Cause I was doing this for the same thing
Like for Sucrose
Which is C12H22O11
I got:
12 mol C
22 mol H
11 mol O

And I thought.. it was pretty simple, since it's basically the numbers of atoms of the element.

Offline Borek

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Re: How to find the moles of each element?
« Reply #4 on: October 22, 2012, 03:34:56 AM »
Well I have an element called NaCl (Sodium Chloride)

It is a COMPOUND made of two ELEMENTS.
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