Chemistry help

Question:
Calculate the following:
Give all answers in standard form to the same number of significant figures as used for the information in the question.
A) the number of atoms of oxygen in 132g of carbon dioxide, CO2

Reply 1

username1421435

Original post by lucyfran

Literally just do some research. You'll get no where from getting people to answer your questions, have a google and see what you can find yourself, and if you can't find anything, only then ask:

http://antoine.frostburg.edu/chem/senese/101/moles/faq/atoms-in-compound.shtml

Reply 2

lucyfran

Original post by Eux

I looked online, did some research but didn't understand so I was hoping if someone did a walk through on here of the first question, then I would be able to do the other 20 questions by myself once I had understood the theory of it. So I wasn't just getting people to answer my questions, I was just hoping to gain some more understanding.

Reply 3

Kugelmugel

Which level is this if you don't mind me asking? :s-smilie:

Reply 4

lucyfran

Original post by Kugelmugel

Which level is this if you don't mind me asking? :s-smilie:

I'm doing my AS levels if that's what you're asking?

Reply 5

username1421435

Original post by lucyfran

http://www.meritnation.com/ask-answer/question/calculate-the-number-of-atoms-ofoxygen-present-in-88g-of/chemistry/2726410

Reply 6

Kugelmugel

Original post by lucyfran

I'm doing my AS levels if that's what you're asking?

Yes that's what I meant, thank you :smile:

Thing is I've seen several questions like this on here lately and I swear we didn't do this at AS level and I'm wondering if we should've :s-smilie:

Sorry to distract you though! Good luck with AS chem :smile:

Reply 7

lucyfran

Original post by Kugelmugel

Yes that's what I meant, thank you :smile:

Thing is I've seen several questions like this on here lately and I swear we didn't do this at AS level and I'm wondering if we should've :s-smilie:

Sorry to distract you though! Good luck with AS chem :smile:

Are you doing alevels then now? If you didn't do it at AS then I assume you'll do it at A level but I think we also did this at GCSE it's just recapping it but I'm not sure. That's okay, thank you and good luck to you for your alevels if that's what you're doing. :tongue:

Reply 8

Kugelmugel

Original post by lucyfran

Well I'm at A2 now which is why I should probably know this xD Which exam board are you though? I've never seen this on past papers if I was supposed to know it!

Reply 9

Kugelmugel

Also, depending on your exam board, I find www.chemrevise.org SO helpful! You might be able to find the answer there if you haven't got it yet :smile:

Reply 10

lucyfran

Original post by Kugelmugel

Well I'm at A2 now which is why I should probably know this xD Which exam board are you though? I've never seen this on past papers if I was supposed to know it!

My exam board is OCR. It's quite strange that you haven't seen it on any past papers though even if you have a different exam board, I would've thought it was a pretty staple thing to need to know.

Reply 11

lucyfran

Original post by Kugelmugel

Also, depending on your exam board, I find www.chemrevise.org SO helpful! You might be able to find the answer there if you haven't got it yet :smile:

Thank you so much!