Question

Aluminum oxide can be formed from its elements. How many grams of aluminum will react with 12.0 L of oxygen at STP?

Answer 1

This has a formula right?

Answer 2

I can help you, but just making sure

Answer 3

No the problem does not include a equation

Answer 4

Oh okay thank you, do you want me to upload the problem?

Answer 5

Yeah that's fine :3

Answer 6

Well first tell me, what's the atomic weight of Al?

Answer 7

26.98

Answer 8

This is the problem and the attempt I have done for it.

Answer 9

Okay, so this problem involves stoicheomitry

Answer 10

Yeah I think so, but I'm not sure if what I did was right

Answer 11

You're on the right track about the Oxygen part but you got to convert the moles of oxygen into moles Al

Answer 12

yeah I used the ratio of 2/3 as the conversion since no conversion was given. I used 2/3 because of Al2O3

Answer 13

so I multiplied 2/3 by the moles of O2 (.54) in order to get the moles of Al

Answer 14

You don't need to convert the number into moles of Al, Al is simply 1 mol- on the denominator if numerator.

Answer 15

and multiply this by the MW of Al

Answer 16

so multiply .54 by the molar mass of Al?

Answer 17

Yeah, but you can solve this problem using one whole stoicheiomectric uhh setup.

Answer 18

oh okay, thanks. If you don't mind, could I ask you 2 more equations?

Answer 19

sorry I meant to say questions

Answer 20

hould look like this. But sure!

Answer 21

Should*

Answer 22

yeah I did learn it like that too, but my professor wants us to write it out like the way I showed you.

Answer 23

Ah alright. Well are you in Chemistry Honors or AP CHem. ?

Answer 24

But you wrote it correctly also!

Answer 25

I'm actually in college right now and I'm talking chem

Answer 26

That's awesome. Well I'll help either way! I'm going to college this fall. Anyways, your qestions?

Answer 27

Cool!!! Did I write these two question right? I feel like I did not.

Answer 28

first one is right. And 2nd one, you go to balance the equation first which you're doing.. and hold on lemme do the equation

Answer 29

Okay, yeah cause I was getting confused on how to balance the second equation

Answer 30

ugh now I'm stuck on the balancing .-.

Answer 31

yeah... thats where I got stuck too. I can do the rest of the problem easily but the balancing part is really messing me up

Answer 32

Umm could you ask your professor though and let me know too? Ugh sorry about that :C

Answer 33

Yeah I tried doing that and he as not emailed me back yet. And plus my exam is tomorrow, so idk when he's going to email me back. But thank you soo much for you help!!! (:

Answer 34

And don't worry about it, you've helped me a lot!!!!!

Answer 35

wait, maybe no balancing is required. There's 2.5 M of potassium ssulfite

Answer 36

Or maybe oh crap .-. but you're welcome though!