What is the volume of gas

[kimba]

20 cubic inches of a gas with an absolute sressure of 5 psi is compressed until its pressure reaches 10 psi. What is the ne volume of the gas? (assume that ther is no change in temperature}

[kempie]

Am I missing something or is this not explained using PV = nRT (assuming ideal gases)?

[Peter Pedant]

No Kempie you are not missing anything besides some fella's science homework from the west coast.

use Boyles law, PV = k

 and then you find that if pressure is doubled then the volume is halved - at const T

(god I wish the Americans would use SI units, life is so much simpler.....)

[bernardo]

10 cubic inches

[tony1941]

See this link for a really basic (well it is American!) animation.  Other links follow from this start point.

http://www.grc.nasa.gov/WWW/K-12/airplane/aboyle.html