Unit Conversions

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805097738
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Unit Conversions

Postby 805097738 » Tue Oct 01, 2019 10:11 am

How do you convert atoms to moles?

Ada Chung 1C
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Re: Unit Conversions

Postby Ada Chung 1C » Tue Oct 01, 2019 10:15 am

To convert from atoms to moles you will need to use Avogadro's number (6.022x10^23). We learned that I mole contains 6.022x10^23 atoms). In order to convert moles multiply the number of moles by 6.022 x10^23 and then you should be able to find the number of atoms. If you would like to convert the number atoms to the number of moles you will do the opposite and instead divide atoms by 6.022x10^23.

Hiba Alnajjar_2C
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Re: Unit Conversions

Postby Hiba Alnajjar_2C » Tue Oct 01, 2019 10:16 am

Typically, one would use dimensional analysis to do so. Using the definition of 1 mole = 6.022 x 10^23 atoms, you can convert from moles to atoms or atoms to moles. For example, if you have 10 moles of Carbon, you would multiply this number by 6.022 x 10^23 to find the number of atoms in the sample. On the other hand, if you have 10 Carbon atoms and want to convert to moles, you would divide 10 by 6.022 x 10^23 to find the number of moles. Hope this helps!

CynthiaLy4F
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Re: Unit Conversions

Postby CynthiaLy4F » Tue Oct 01, 2019 10:24 am

To convert from atoms to moles, you would divide the number of atoms by 6.022 x 10^23 (Avogadro's constant) to get the number of moles. It would be helpful to memorize that the number of objects (ions, atoms, or molecules) = amount of moles x Avogadro's constant and rearrange the equation to solve for what exactly you are looking for.

Luyan Zhang - 2D
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Re: Unit Conversions

Postby Luyan Zhang - 2D » Tue Oct 01, 2019 11:27 am

You use the the conversion:

1 mole = 6.022 * 10^23 molecules/atoms

Maeve Miller 1A
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Re: Unit Conversions

Postby Maeve Miller 1A » Wed Oct 02, 2019 7:11 pm

You typically convert moles to atoms by multiplying by Avogadro's constant (6.022 * 10^23). You can also use this when the problem asks you to convert to formula units.

Junwei Sun 4I
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Re: Unit Conversions

Postby Junwei Sun 4I » Thu Oct 03, 2019 12:05 am

You will need to use Avogadro's number which is 1 mole = 6.022*10^23 atoms. For example if you want to convert 12g of Na to atoms you will first need do 12g Na* (1 mole Na / 22.98g Na) which gives you the answer of 0.52 moles of Na. Then you calculate 0.52 moles Na * (6.022*10^23 atoms / 1 mole Na) which gives you the number of atoms. It's helpful to look at the units as in the calculation all units should cancel out at last except number of atoms.

Sion Hwang 4D
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Joined: Wed Sep 18, 2019 12:21 am

Re: Unit Conversions

Postby Sion Hwang 4D » Thu Oct 03, 2019 1:02 am

You will have to use Avogadro's number, which states that 1 mol of a substance contains 6.022 x (10^23) atoms of it. Thus, you take however many (x) mols you have, and multiply it to Avogadro's number.
Thus, you have the equation: x mol * (6.022 x (10^23) atoms / mol), which cancels the mols out and leaves you with "x" atoms.

Lauren Lewis3L
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Re: Unit Conversions

Postby Lauren Lewis3L » Sat Oct 05, 2019 11:23 pm

I have this diagram that my Sophomore year chemistry teacher gave us for finding ways to get moles. Is dividing monatomic atoms by Avogadro's number the same thing as going from atoms to moles or does that require you to go from atoms to molecules and then moles?

Bradley Whitworth 4B
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Re: Unit Conversions

Postby Bradley Whitworth 4B » Sun Oct 06, 2019 3:59 pm

All you need for going back and forth between moles and atoms is Avogadro's number because all a mole really is is a term for an "amount of things" so to speak. So, just like 1 dozen cookies is 12 cookies, 1 mole of atoms is 6.022x10^23 atoms. Hence, to convert from moles to atoms you multiply the amount of moles you have by 6.022x10^23 and to convert from atoms to moles you divide the amount of atoms you have by 6.022x10^23.

rohun2H
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Re: Unit Conversions

Postby rohun2H » Sun Oct 06, 2019 4:32 pm

Divide by Avogadro's number.

1 mole = 6.022 * 10^23 atoms (molecules)

SarahCoufal_1k
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Re: Unit Conversions

Postby SarahCoufal_1k » Sun Oct 06, 2019 4:41 pm

1mole of atoms is 6.022 * 10^23, which is Avogadro's number. To convert atoms to moles, you take the number of atoms and divide by Avogadro's number.

A easy analogy is: Think of 36 eggs and you want to know how many dozens. you divide the number of eggs by the number that represents the dozen which is. 12. so. 36/12 is 3 dozen
In this atoms:eggs, moles:dozens- you divide the. number of atoms by the number that. represents moles


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