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Topic: Challenging test question  (Read 3371 times)

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Offline supehr

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Challenging test question
« on: May 16, 2014, 07:27:32 PM »
I was working on the test question from last year.
What i first did was solved for volume of KO2 and then i don't know where to go on from there?
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Offline Borek

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Re: Challenging test question
« Reply #1 on: May 17, 2014, 03:34:55 AM »
Volume of KO2?
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Offline supehr

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Re: Challenging test question
« Reply #2 on: May 17, 2014, 11:05:19 AM »
I mean they gave me all the things needed to calculate the volume of KO2 (the pressure, temperature, and 1kg mass of it as well). Unless i wasn't supposed to take the route? I don't know where to go with this question :(
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Offline Borek

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Re: Challenging test question
« Reply #3 on: May 17, 2014, 01:53:49 PM »
Are you sure you are not mistaking KO2 for CO2?
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Offline supehr

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Re: Challenging test question
« Reply #4 on: May 17, 2014, 04:18:59 PM »
Oh you're right!
So i found the moles of CO2 using mole ratios and then found volume CO2 with PV=nRT and used a conversion pathway to get 8.22 hours. I don't know if thats correct though  ??? 
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Offline Borek

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Re: Challenging test question
« Reply #5 on: May 17, 2014, 05:45:43 PM »
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Offline supehr

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Re: Challenging test question
« Reply #6 on: May 18, 2014, 05:59:21 PM »
thank you!  ;D
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Offline momoho

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Re: Challenging test question
« Reply #7 on: May 22, 2014, 10:13:59 AM »
Quote from: supehr on May 16, 2014, 07:27:32 PM
I was working on the test question from last year.
What i first did was solved for volume of KO2 and then i don't know where to go on from there?
What is the source of this question?
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Offline AWK

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Re: Challenging test question
« Reply #8 on: May 22, 2014, 10:32:35 AM »
4% of CO2 (40,000 ppm) is the maximum instantaneous limit considered immediately dangerous to life and health.
http://www.inspectapedia.com/hazmat/CO2_Exposure_Limits.htm
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