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Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:25:43 No.7454342 View View Reply Original Report

Quoted By: >>7454345

how do you predict the products of a chemical reaction if you know which type of reaction it is by its reactants

Anonymous

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Anonymous ID:HovJwq4h Thu 07 Feb 2019 04:27:30 No.7454345 Report

Quoted By: >>7454358

>>7454342
By identifying the type of reaction involved.
k bye

Anonymous

Anonymous ID:cA0YtGW3 Thu 07 Feb 2019 04:30:12 No.7454357 Report

Quoted By:

idk

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:30:26 No.7454358 Report

Quoted By: >>7454368 >>7454373 >>7454374

>>7454345
yeah i mean what do you do after that
like if you know it's a synthesis reaction from 2Mg + O2 how are you supposed to know that the product is 2MgO and not 2MgO2?

Anonymous

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Anonymous ID:HovJwq4h Thu 07 Feb 2019 04:36:01 No.7454368 Report

Quoted By: >>7454372

>>7454358
byeeeeeeeeeeeeeeeeeeeeeeeee

Anonymous

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Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:38:14 No.7454372 Report

Quoted By:

>>7454368
i tried that but i still don't get it i have a test tomorrow jfkjdlkfsdjflkdjflsjdjfihehfehfehsjflsefjsl

Anonymous

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Anonymous ID:6U7At77N Thu 07 Feb 2019 04:38:17 No.7454373 Report

Quoted By: >>7454376

>>7454358
something something molar mass of element and number of moles

Anonymous

Anonymous ID:moqv5Uol Thu 07 Feb 2019 04:38:26 No.7454374 Report

Quoted By: >>7454376

>>7454358
It's written in alphabetical order, smooth brian

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:40:14 No.7454376 Report

Quoted By: >>7454378 >>7454379 >>7454384

>>7454373
wtf i thought molar mass was a whole different thing
>>7454374
i know that but why is there only one oxygen in the product when there was two in the reactants?

Anonymous

Anonymous ID:nH8Fi06P Thu 07 Feb 2019 04:42:20 No.7454378 Report

Quoted By: >>7454380

>>7454376
because the bond between the two oxygens was broken

Anonymous

Anonymous ID:moqv5Uol Thu 07 Feb 2019 04:42:38 No.7454379 Report

Quoted By:

>>7454376
Number of links blahblahblah chemistry a stupid like u

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:43:22 No.7454380 Report

Quoted By:

>>7454378
how do you figure that out

Anonymous

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Anonymous ID:6U7At77N Thu 07 Feb 2019 04:44:59 No.7454384 Report

Quoted By: >>7454390

>>7454376
idk its been too long sorry
do your best on the test btw im rooting for you anon

Anonymous

Anonymous ID:SP+Kh4YU Thu 07 Feb 2019 04:45:48 No.7454385 Report

Quoted By: >>7454390

Let’s say it’s a reaction between Magnesium and Oxygen, Mg has a charge of +2 while O has a charge of -2. So the charge will cancel each other out and the final product is MgO. The balanced equation is 2Mg+O2–> 2MgO

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:49:13 No.7454390 Report

Quoted By: >>7454393 >>7454394

>>7454384
thanks anone
>>7454385
oh, this makes sense. so if Mg was +2 and O was -3 then would it be MgO2? or would O have to be -4 to end up with MgO2?

Anonymous

Anonymous ID:nH8Fi06P Thu 07 Feb 2019 04:51:24 No.7454393 Report

Quoted By: >>7454397

>>7454390
it would be Mg3O2

Anonymous

Anonymous ID:moqv5Uol Thu 07 Feb 2019 04:51:43 No.7454394 Report

Quoted By: >>7454397

>>7454390
No. If MG was +2 and O -4 you'd have 2MgO
2 positives charges from the Mg negates the 4 negatives charges of the O

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:54:12 No.7454397 Report

Quoted By: >>7454398 >>7454401

>>7454393
oh yeah you have to make them proportional, thanks
>>7454394
uh are you sure
if +2 and -2 cancel out why would +2 and -4 cancel out as well?

Anonymous

Anonymous ID:nH8Fi06P Thu 07 Feb 2019 04:56:38 No.7454398 Report

Quoted By: >>7454400 >>7454403

>>7454397
I think he means Mg2O
Also magnesium peroxide can form, I'm not sure whether it has a balanced charge or not

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 04:58:27 No.7454400 Report

Quoted By: >>7454401

>>7454398
oh ok, i think i get the basics now. so for other stuff like double replacement i guess it would just be the same but with more elements or is there more involved?

Anonymous

Anonymous ID:nH8Fi06P Thu 07 Feb 2019 05:01:11 No.7454401 Report

Quoted By: >>7454413

>>7454397
in peroxides the oxygen atoms are only 1- instead of 2-
so MgO2 could form as well as MgO, there's probably special bs conditions for it though

>>7454400
can you give an example of a double replacement problem?

Anonymous

Anonymous ID:moqv5Uol Thu 07 Feb 2019 05:01:45 No.7454403 Report

Quoted By:

>>7454398
Yeah you're right. Haven't done this in ages and I forgot where to put the numbers and stuff

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 05:05:44 No.7454413 Report

Quoted By: >>7454422

>>7454401
K2CO3 + BaCl2
(the 3 is subscript to only O not CO)

Anonymous

Anonymous ID:nH8Fi06P Thu 07 Feb 2019 05:12:09 No.7454422 Report

Quoted By: >>7454438

>>7454413
that's a bit trickier, I haven't done that kinda stuff in a long time
I'll have a quick look online to refresh, it's probably got something to do with electronegativity
there could be three products idk

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 05:15:16 No.7454438 Report

Quoted By: >>7454464

>>7454422
it says the answer is 2KCl + BaCO3, does that make it easier to figure out how to do it?

Anonymous

Anonymous ID:nH8Fi06P Thu 07 Feb 2019 05:20:20 No.7454464 Report

Quoted By: >>7454473

>>7454438
yeah that makes sense, Ba (2+) goes with CO3 (2-), and K+ goes with Cl-
does class talk about electronegativity at all

Anonymous

Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 05:23:17 No.7454473 Report

Quoted By: >>7454477

>>7454464
yes we did do stuff with electronegativity but i don't think we used it for this unit, i guess it's mostly just using the charges then

Anonymous

Anonymous ID:nH8Fi06P Thu 07 Feb 2019 05:24:30 No.7454477 Report

Quoted By: >>7454488

>>7454473
yeah don't worry about the why then, just add up the charges and balance them

Anonymous

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Anonymous ID:Ts5bWMxN Thu 07 Feb 2019 05:28:30 No.7454488 Report

Quoted By:

>>7454477
ok then. thanks kiwi you're a life saver :)

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