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Re: Need help with chemistry, 75 robux if answer is right

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Xotos is not online. Xotos
Joined: 04 Jul 2015
Total Posts: 2239
27 Oct 2017 10:21 PM
How many moles of iron atoms are in 1.5 ×10e24 atoms iron?



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Xotos is not online. Xotos
Joined: 04 Jul 2015
Total Posts: 2239
27 Oct 2017 10:22 PM
Tried some online calculators
still couldn't figure it out


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Bee_Hop is not online. Bee_Hop
Joined: 25 Mar 2012
Total Posts: 9452
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 is not online. Xotos
Joined: 04 Jul 2015
Total Posts: 2239
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 is not online. Xotos
Joined: 04 Jul 2015
Total Posts: 2239
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 is not online. Xotos
Joined: 04 Jul 2015
Total Posts: 2239
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 is online. IYIoney
Joined: 13 Jan 2015
Total Posts: 1728
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 is not online. Thorce
Joined: 17 Jan 2013
Total Posts: 4723
27 Oct 2017 10:32 PM
i hate chem


(ง ° ل͜ °)ง
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FrozenFoil is online. FrozenFoil
Joined: 17 Feb 2012
Total Posts: 21232
27 Oct 2017 10:33 PM
isnt it just like mass / molecular mass (mr)?


Hi I'm FrozenFoil.
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IYIoney is online. IYIoney
Joined: 13 Jan 2015
Total Posts: 1728
27 Oct 2017 10:34 PM
############################################################################ 𝕮𝖙𝖍𝖚𝖑𝖍𝖚>𝕬𝖑𝖑 https://www.roblox.com/Trade/TradeWindow.aspx?TradeSessionId=49385031&TradePartnerID=418304256
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Barcid is online. Barcid
Joined: 14 Feb 2010
Total Posts: 2963
27 Oct 2017 10:35 PM
use avogadro's constant

atoms of iron / c
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IYIoney is online. IYIoney
Joined: 13 Jan 2015
Total Posts: 1728
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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DominusRobloxia is online. DominusRobloxia
Joined: 07 Jan 2012
Total Posts: 6856
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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RapTradezz is not online. RapTradezz
Joined: 02 Jun 2017
Total Posts: 649
27 Oct 2017 10:37 PM
Divide by avocados constant bro
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Xotos is not online. Xotos
Joined: 04 Jul 2015
Total Posts: 2239
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 is online. Barcid
Joined: 14 Feb 2010
Total Posts: 2963
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 is not online. Xotos
Joined: 04 Jul 2015
Total Posts: 2239
27 Oct 2017 10:43 PM
found 1 nvm plugging it in


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agent_charlezz is not online. agent_charlezz
Joined: 24 Jan 2014
Total Posts: 399
27 Oct 2017 11:09 PM
add me on discord Sacredfists#9375
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MontrealCA is not online. MontrealCA
Joined: 21 Nov 2009
Total Posts: 6770
28 Oct 2017 12:56 AM
laziness at it's finest lol
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