HELP!!

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Kay Kay
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Wed Feb 01, 2006 3:43 pm
Kay Kay says... · Wed Feb 01, 2006 3:43 pm
Does anyone here know anything about balancing equations in chemistry?????
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sabradan
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Wed Feb 01, 2006 7:05 pm
sabradan says... · Wed Feb 01, 2006 7:05 pm
what do you need to know? I may be able to brush up on my chemistry (the only science I was halfway decent at)
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Meshugenah
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Thu Feb 02, 2006 2:08 am
Meshugenah says... · Thu Feb 02, 2006 2:08 am
bring on the equations! I've got AP this year, so that should help.
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Snoink
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Thu Feb 02, 2006 2:16 am
Snoink says... · Thu Feb 02, 2006 2:16 am
Yep. :) I got an A in chemistry last semester! :)
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Kay Kay
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Thu Feb 02, 2006 3:43 pm
Kay Kay says... · Thu Feb 02, 2006 3:43 pm
It's just that I don't know how to solve them. I see like all the Mg's and get that but i don't see how to figure out how to solve them. I know the displacement stuff though. Can anyone explain how to solve them to me? Like here's an example:

MgNa + Al3 -> Mg2Al4 + Mg3Al2

HELP!!
Quarrels would not last long if the fault were only on one side.
--La Rochedoucauld

"An unexamined life is not worth living..."
---Socraties
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Duskglimmer
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Thu Feb 02, 2006 7:36 pm
Duskglimmer says... · Thu Feb 02, 2006 7:36 pm
Basically, you're trying to make sure that you have the same number of atoms on each side.

So you take the first side and you tally up the atoms:
1 Mg
1 Na
3 Al

Then you take the second side and tally them up (I'm assuming that all the numbers you have are modifying the elements before them):
5 Mg
6 Al

Now, you have a problem with this one because you suddenly have no Na, so I'm thinking that either you copied it wrong, or there is something very wrong with your textbook.

But what you would end up doing with this, is taking the first side and multiplying it so that it ended up with the same number of atoms as the other side.
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Kay Kay
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Fri Feb 10, 2006 3:30 pm
Kay Kay says... · Fri Feb 10, 2006 3:30 pm
Thanx it is helping a little. My text book must be screwed up cuz that is where I got it from.
Quarrels would not last long if the fault were only on one side.
--La Rochedoucauld

"An unexamined life is not worth living..."
---Socraties
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Elizabeth
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Fri Feb 10, 2006 5:13 pm
Elizabeth says... · Fri Feb 10, 2006 5:13 pm
Yeah, I learned this stuff this year, I was in the hospital when we learned most of it (began it) but yeah.
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Snoink
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Fri Feb 10, 2006 8:56 pm
Snoink says... · Fri Feb 10, 2006 8:56 pm
Oh dear...

I think your book is completely wrong. :?

Dusky's right though.
Ubi caritas est vera, Deus ibi est.

"The mark of your ignorance is the depth of your belief in injustice and tragedy. What the caterpillar calls the end of the world, the Master calls the butterfly." ~ Richard Bach

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Kay Kay
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Thu Feb 16, 2006 11:41 pm
Kay Kay says... · Thu Feb 16, 2006 11:41 pm
My book is wrong...terrible. No wonder i'm not learning it right.
Quarrels would not last long if the fault were only on one side.
--La Rochedoucauld

"An unexamined life is not worth living..."
---Socraties
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-KayJuran-
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Thu Feb 16, 2006 11:47 pm
-KayJuran- says... · Thu Feb 16, 2006 11:47 pm
Kay Kay wrote:It's just that I don't know how to solve them. I see like all the Mg's and get that but i don't see how to figure out how to solve them. I know the displacement stuff though. Can anyone explain how to solve them to me? Like here's an example:

MgNa + Al3 -> Mg2Al4 + Mg3Al2

HELP!!


yep, i can definately see why you're confused. your book has gotta be wrong. if i were you, i'd talk to the teacher about this because i really don't think it makes any sense like this...

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