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- Posts: 101
- Joined: Sat Sep 07, 2019 12:16 am
What's the difference between finding number of atoms or finding number of formula units? I know how to find formula units using dimensional analysis but am confused on the concept of them.
Brian J Cheng 1I
- Posts: 115
- Joined: Thu Jul 11, 2019 12:15 am
A google search told me that "formula units" is equal to the number of molecules of that specific compound present. I would use the same method as finding the amount of atoms (1 mol == 6.022 x 10^23 atoms or formula units). Please correct me if I'm wrong, thanks!
Charysa Santos 4G
- Posts: 107
- Joined: Wed Sep 18, 2019 12:21 am
Formula units just refer to an ionic compound's empirical formula, right? In any case, you would just multiply by Avogadro's constant (6.022 × 10^23 mol-1) to find the formula units.
Megan Jung 3A
- Posts: 50
- Joined: Thu Jul 11, 2019 12:17 am
The procedure for finding the number of atoms and the number of formula units is the same. Both require use of avogadro's constant in order to convert the values. An atom refers to the single element in a equation while a formula unit refers to finding a unit of an ionic compound.
Rebecca Epner 4A
- Posts: 53
- Joined: Sat Aug 17, 2019 12:18 am
I believe in some cases formula units refers to the number of atoms while in other cases it refers to the number of molecules, just depending on what the specific question is asking
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