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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: DesertRose on April 19, 2010, 08:41:17 PM

Title: Question on how to find the mass of oxygen at r.t.p
Post by: DesertRose on April 19, 2010, 08:41:17 PM
I am given a question that says, "What is the mass of 48 dm^3 of oxygen at r.t.p?"
Can someone explain to me how to arrived at the answer? I am a bit confused.  Any help would be greatly appreciated!
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: Matias Ekstrand on April 20, 2010, 02:21:50 AM
http://en.wikipedia.org/wiki/Standard_conditions_for_temperature_and_pressure

Use the ideal gas equation to find the amount of oxygen, and then convert to mass.
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: billnotgatez on April 20, 2010, 04:29:50 AM
what is rtp

(real time programming???)
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: Borek on April 20, 2010, 05:28:47 AM
Like stp, just in room :)
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: DesertRose on April 20, 2010, 06:33:30 PM
Hey, thanks a lot!

And r.t.p stands for room temperature and pressure.
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: billnotgatez on April 20, 2010, 11:30:45 PM
rooms can be many temperaturs
can we have a number
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: Borek on April 21, 2010, 03:32:01 AM
Usually either 20 or 25 deg C. It is about as exact as STP is.
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: DesertRose on April 21, 2010, 05:05:17 PM
24 dm^3 is the temperature at r.t.p
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: Borek on April 21, 2010, 05:12:48 PM
Quote from: DesertRose on April 21, 2010, 05:05:17 PM
24 dm^3 is the temperature at r.t.p
24 dm3 is not a temperature, just like 17 K is not a distance.
Title: Re: Question on how to find the mass of oxygen at r.t.p
Post by: DesertRose on April 21, 2010, 06:10:11 PM
oh, then it's the volume?
thanks!!