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Topic: Gas Laws - finding fraction of the air expelled  (Read 1314 times)

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Offline GPCR pathway

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Gas Laws - finding fraction of the air expelled
« on: January 18, 2019, 01:42:26 AM »
When an open flask containing air is heated from 27C to 87C, what fraction of the air in the flask is expelled? Assume that the volume of the flask and the atmospheric pressure are constant. Answer in mol.

How do you compute for this? is it n1T1=n2T2? because if it is then how do you work around to find the answer?
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Online Borek

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Re: Gas Laws - finding fraction of the air expelled
« Reply #1 on: January 18, 2019, 02:52:57 AM »
Use PV=nRT to calculate amount of gas present initially and at the end (use just symbols, some of them will be unknown, don't worry about that at this stage). Use these to find the answer - and see what cancels out.
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