Posted by tony on Wednesday, February 25, 2009 at 11:20am.
Solve the problem. The volume V of a gas varies inversely as the pressure P on it. The volume of a gas is 240 cm3 under a pressure of 23 kg/cm2 What will be its volume under a pressure of 30 kg/cm2?

college alegebra  drwls, Wednesday, February 25, 2009 at 12:17pm
In this situation, because of the inverse proportionality,
P1/P2 = V2/V1
1 and 2 denote the two different conditions.
23/30 = V2/240
Solve for V2, the volume at P2 = 30

college alegebra  tony, Wednesday, February 25, 2009 at 12:21pm
aaaahhhh, now i get it

college alegebra  tony, Wednesday, February 25, 2009 at 12:32pm
however, the options are:
184, 166, 313, or 297

college alegebra  tony, Wednesday, February 25, 2009 at 12:46pm
I got 313, is this correct?
(240*30)/23=313

college alegebra  drwls, Wednesday, February 25, 2009 at 5:34pm
No, it is 184. You incorrectly rearranged the equation I wrote.
The volume has to decrease when you increase the pressure.
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