Compressed gases aren't ideal. Let's consider a gas that's non-ideal only because the volume available to each of the N molecules is reduced because each other molecule occupies volume v. Instead of PV=NKT, we get: P(V-NB)=NKT. Let b=1.2 x 10-28 m3.
Let's look at 3moles of this gas at T=300K starting in 0.001 m3 volume.
1) What's the initial value of the pressure? Pinitial= Pa
2) The gas expands isothermally to 0.002 m3.What's the final pressure? Pfinal= Pa
3) How much work did the gas do in this isothermal expansion? W= J

the answer would be c

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form