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Offline elcabin

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Question
« on: December 17, 2007, 08:10:41 PM »
The density of sulfur vapor at 1273K and 740 torr is 0.5977 g/L. Its molar mass is __________.

Can someone guide me through this problem?
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Offline Padfoot

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Re: Question
« Reply #1 on: December 17, 2007, 08:18:26 PM »
How many moles of the vapour will be in 1 L?
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Offline elcabin

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Re: Question
« Reply #2 on: December 17, 2007, 10:55:33 PM »
22.4 moles ;D
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Offline Padfoot

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Re: Question
« Reply #3 on: December 18, 2007, 06:34:26 AM »
Quote from: elcabin on December 17, 2007, 10:55:33 PM
22.4 moles ;D
That's at STP.  It changes though - try using PV=nRT

http://en.wikipedia.org/wiki/Gas_constant




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Offline AWK

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Re: Question
« Reply #4 on: December 18, 2007, 07:17:20 AM »
rearrange the ideal gas law to
pM=dRT
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AWK
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