posted by Anonymous .
A sample of helium gas has a pressure of 860 mm Hg at a temperature of 225 K. At what pressure (mm Hg) will the helium sample reach a temperature of 675 K.
At constant volume, P/T = constant.
P1/T1 = 860/225 = P2/T2 = P2/675
P2 = 2580 mm Hg will be the final pressure.
It must triple because the absolute temperature triples.