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Pressure/Temperature Problem

Author Topic:   Pressure/Temperature Problem
Percy
Member
Posts: 20099
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.2

 Message 1 of 5 (540833) 12-29-2009 12:37 PM

The formatting made it hard to tell what you were trying to say in your email, but when calculating the effect of temperature on pressure you can use Charles Law:

You gave these values:

Plugging in the values:

Multiplying both sides of the equation by P2 and switching sides around the equals sign:

Now we can multiply both sides by 499.2:

And now we can divide both sides by 546:

And doing the math gives us:

Which is roughly the same answer you got, except that you were a little off because you rounded 39.2 into 39, so it looks like your method was correct.

 Replies to this message: Message 2 by Taz, posted 12-29-2009 2:55 PM Percy has responded

Percy
Member
Posts: 20099
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.2

 Message 3 of 5 (540934) 12-30-2009 6:56 AM Reply to: Message 2 by Taz12-29-2009 2:55 PM

You may be right, I don't know. These are multiple choice tests, and the answers tend to be in round numbers, but I don't have a copy of this test.

--Percy

 This message is a reply to: Message 2 by Taz, posted 12-29-2009 2:55 PM Taz has not yet responded

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