Xotos
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| Joined: 04 Jul 2015 |
| Total Posts: 2239 |
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| 27 Oct 2017 10:21 PM |
How many moles of iron atoms are in 1.5 ×10e24 atoms iron?
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Xotos
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| Joined: 04 Jul 2015 |
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| 27 Oct 2017 10:22 PM |
Tried some online calculators still couldn't figure it out
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Bee_Hop
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| Joined: 25 Mar 2012 |
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| 27 Oct 2017 10:23 PM |
| The elementary unit in the case of Fe2O3 has 2 atoms of iron and 3 atoms of oxygen. 6 moles of Fe2O3 have 6*2*6.022*10^23 atoms of iron. |
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Xotos
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| Joined: 04 Jul 2015 |
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| 27 Oct 2017 10:25 PM |
my bad didn't include this
How many moles of iron atoms are in 1.5 × 10e24 atoms iron? Answer in units of mol. <---
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Xotos
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| Joined: 04 Jul 2015 |
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| 27 Oct 2017 10:26 PM |
helpppp i have a high B in the class and this is the final grade of the quater if i get this right i have an a- if i get this wrong i have a b+
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Xotos
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| Joined: 04 Jul 2015 |
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| 27 Oct 2017 10:29 PM |
i have half a hour im gnna try to figure this out a little more but spent like 10 mins on this question already cause the teacher never explained it
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IYIoney
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| Joined: 13 Jan 2015 |
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| 27 Oct 2017 10:32 PM |
There are two iron atoms and three oxygen atoms in each molecule. ( 5 atoms per molecule )
𝕮𝖙𝖍𝖚𝖑𝖍𝖚>𝕬𝖑𝖑 https://www.roblox.com/Trade/TradeWindow.aspx?TradeSessionId=49385031&TradePartnerID=418304256 |
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Thorce
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| Joined: 17 Jan 2013 |
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| 27 Oct 2017 10:33 PM |
isnt it just like mass / molecular mass (mr)?
Hi I'm FrozenFoil. |
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IYIoney
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| Joined: 13 Jan 2015 |
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| 27 Oct 2017 10:34 PM |
| ############################################################################ 𝕮𝖙𝖍𝖚𝖑𝖍𝖚>𝕬𝖑𝖑 https://www.roblox.com/Trade/TradeWindow.aspx?TradeSessionId=49385031&TradePartnerID=418304256 |
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Barcid
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| Joined: 14 Feb 2010 |
| Total Posts: 2963 |
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| 27 Oct 2017 10:35 PM |
use avogadro's constant
atoms of iron / c |
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IYIoney
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| Joined: 13 Jan 2015 |
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| 27 Oct 2017 10:36 PM |
h tt ps : / /socratic. o rg/quest ions/how-many-iron-atoms-are-in-0-550-mol-of-fe2o3
𝕮𝖙𝖍𝖚𝖑𝖍𝖚>𝕬𝖑𝖑 https://www.roblox.com/Trade/TradeWindow.aspx?TradeSessionId=49385031&TradePartnerID=418304256 |
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| 27 Oct 2017 10:37 PM |
you know that you have 1.5x10e24 atoms of iron then you want to change it from atoms to moles
moles equal 6.022e23 atoms which is avogadro's number
so its 1.5x10^24 * 1/6.022x10^23
its 1.5x10^24/6.022x10^23 |
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| 27 Oct 2017 10:37 PM |
| Divide by avocados constant bro |
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Xotos
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| Joined: 04 Jul 2015 |
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| 27 Oct 2017 10:42 PM |
I don't have a scientific calculator and don't know how to use the google one anyways 75 to the vak guy 75 to whoever can plug that in for me (if it is right)
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Barcid
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| Joined: 14 Feb 2010 |
| Total Posts: 2963 |
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| 27 Oct 2017 10:43 PM |
| boi i literally messaged you w/ the right answer like 3 minutes before he posted |
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Xotos
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| Joined: 04 Jul 2015 |
| Total Posts: 2239 |
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| 27 Oct 2017 10:43 PM |
found 1 nvm plugging it in
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| 27 Oct 2017 11:09 PM |
| add me on discord Sacredfists#9375 |
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| 28 Oct 2017 12:56 AM |
| laziness at it's finest lol |
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