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Topic: Need Help with Gas Stoichiometry  (Read 2116 times)

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Offline vigito234

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Need Help with Gas Stoichiometry
« on: January 05, 2015, 12:49:36 AM »
http://i.imgur.com/3X5d2ub.jpg

That's the problems. I can answer the first part of the question but am unsure with how to proceed. Thanks.
« Last Edit: January 05, 2015, 07:43:18 PM by Arkcon »
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Offline Borek

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Re: Need Help with Gas Stoichiometry
« Reply #1 on: January 05, 2015, 02:41:11 AM »
You have to show your attempts at solving the question to receive help. This is a forum policy.

What laws describing the pressure of the mixture do you know?
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Offline vigito234

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Re: Need Help with Gas Stoichiometry
« Reply #2 on: January 05, 2015, 07:29:51 PM »
Sorry. I can do everything except solve for the partial pressure of O2. All the information there is given in the equation P = (nRT)/V but I don't quite understand how to get the n value. In addition to this, I'm not even sure if this is the correct method. Thanks
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Offline vigito234

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Re: Need Help with Gas Stoichiometry
« Reply #3 on: January 06, 2015, 12:09:54 AM »
I got these answers.

http://imgur.com/gHJOXPw

Could someone please glance over my work?

Thanks so much.
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Offline Borek

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Re: Need Help with Gas Stoichiometry
« Reply #4 on: January 06, 2015, 03:55:58 AM »
You forgot to convert mL to L.

And molar fraction is not expressed in units of pressure, it is unitless.

http://www.chembuddy.com/?left=concentration&right=molar-fraction
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