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Re: Does anyone know how to balance equations

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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
Total Posts: 714
10 Apr 2016 10:17 PM
I got a quiz tomorrow (chemistry)
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Holtbyism is not online. Holtbyism
Joined: 01 Feb 2013
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10 Apr 2016 10:20 PM
Make sure you have the same number of moles for each element/compound on each side. Not hard at all.
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anojan12345 is online. anojan12345
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10 Apr 2016 10:20 PM
ez
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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
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10 Apr 2016 10:22 PM
Give me an example
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Diskerud is not online. Diskerud
Joined: 17 Feb 2014
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10 Apr 2016 10:24 PM
https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/balancing-chemical-equations/v/balancing-chemical-equations-introduction
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Holtbyism is not online. Holtbyism
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10 Apr 2016 10:25 PM
2H2O + 3Mg = H2O + Mg

Add a 2 in front of the H20 and add a 3 to the Mg
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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
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10 Apr 2016 10:27 PM
So if it's


AI + O2 = AI2 + O3

Would I add 2 to the first one and 3 to the second one (O2)?
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jimbobucky is not online. jimbobucky
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10 Apr 2016 10:27 PM
Compare the two sides of each equation, break it down to it's elements (Element examples: C, O, Na, K, P, Hg, the stuff you see on a periodic table)

Count the number of each element you see on each side. For example, you might see Cl2 (the 2 is a subscript), that's 2 Cl's, easy. For something like Ca(OH)2, that's a bit harder. There is 1 Ca element, 2 O's, and 2 H's in that situation.

Use coefficients to balance the equations.

For example:

http://woodridge.k12.oh.us/ourpages/users/dweaver/Chemistry/ChemistryHelpTopics/BalancingEquations/eqn1.jpg

Any questions lmk
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jimbobucky is not online. jimbobucky
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10 Apr 2016 10:30 PM
AI + O2 = AI2 + O3

If you mean Al instead of AI (for Aluminum), then

Left side: 1 Al, 2 O's
Right side: 2 Al's, 3 O's

Now use coefficients to multiply.

2Al + O2 = Al2 + O3
Left side: 2 Al's, 2 O's
Right side: 2 Al's, 3 O's

2Al + 3O2 = Al2 + O3
Left side: 2 Al's, 6 O's
Right side: 2 Al's, 2 O's

2Al + 3O2 = Al2 + 2O3
Left side: 2 Al's, 6 O's
Right side: 2 Al's, 6 O's

***You are allowed to add any coefficient to any molecule/element you see.
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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
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10 Apr 2016 10:32 PM
What in the what
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Holtbyism is not online. Holtbyism
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10 Apr 2016 10:35 PM
Your primary objective is to have the same number of moles on each side. It's simple
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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
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10 Apr 2016 10:36 PM
So did I get it right?
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jimbobucky is not online. jimbobucky
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10 Apr 2016 10:39 PM
Watch this and you'll be set: https://www.youtube.com/watch?v=RnGu3xO2h74
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Holtbyism is not online. Holtbyism
Joined: 01 Feb 2013
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10 Apr 2016 10:39 PM
No. Look at Jimbo's post
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TinyBerry3 is not online. TinyBerry3
Joined: 07 Jun 2008
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10 Apr 2016 10:40 PM
You want to multiply them till they equal basically.

AI + O2 = AI2 + O3

AI times two to get them equal.

You want O2 and O3 to be equal so you find the first number both of them can be.

Multiply the O2 by 3 to get O6

Multiply the O3 by 2 to get O6

Answer: AI2 + O6 = AI2 + O6
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TinyBerry3 is not online. TinyBerry3
Joined: 07 Jun 2008
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10 Apr 2016 10:45 PM
Here's a practice problem I came up with for you:

Na3 + Mg4 = Na2+ Mg8

Remember you want to multiply till they equal each other.
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anojan12345 is online. anojan12345
Joined: 14 Mar 2011
Total Posts: 23676
10 Apr 2016 10:46 PM
"Na3 + Mg4 = Na2+ Mg8"

doesn't the number go in front
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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
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10 Apr 2016 10:47 PM
I think I get it now, not sure, hopefully I'll pass my quiz thanks guys :)
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TinyBerry3 is not online. TinyBerry3
Joined: 07 Jun 2008
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10 Apr 2016 10:48 PM
Yes, Ano. I'm following his format if the teacher expects it that way.

I do it infront though.
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TinyBerry3 is not online. TinyBerry3
Joined: 07 Jun 2008
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10 Apr 2016 10:48 PM
Solve my problem 1st Rod.
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anojan12345 is online. anojan12345
Joined: 14 Mar 2011
Total Posts: 23676
10 Apr 2016 10:48 PM
if its at the end it looks like polyatomic
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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
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10 Apr 2016 10:49 PM
"Na3 + Mg4 = Na2+ Mg8"

Na6 + Mg32 = Na6 + Mg32?
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TinyBerry3 is not online. TinyBerry3
Joined: 07 Jun 2008
Total Posts: 30001
10 Apr 2016 10:51 PM
Yes on Na.

No on Mg.

4 can be multipled by 2 to equal 8.

Mg8 you just multiply by 1

Answer: Na6 + Mg8 = Na6 + Mg8
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God_Rod is not online. God_Rod
Joined: 24 Feb 2016
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10 Apr 2016 10:52 PM
Give me another one please
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TinyBerry3 is not online. TinyBerry3
Joined: 07 Jun 2008
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10 Apr 2016 10:53 PM
Here's another random one I thought of:

Hg5 + C8 = Hg15 + C2
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