On the surface of a hypothetical planet X, the atmospheric pressure is 7.48 x 106 Pa, and the temperature is 5

Question

On the surface of a hypothetical planet X, the atmospheric pressure is 7.48 x 106 Pa, and the temperature is 575 K. On the earth's surface the atmospheric pressure is 1.00 x 105 Pa, while the surface temperature can reach 320 K. These data imply that the planet X has a "thicker" atmosphere at its surface than does the earth, which means that the number of molecules per unit volume (N/V) is greater on the surface of planet X than on the earth. Find the ratio (N/V)X/(N/V)Earth.

Answer 1

PV = NRT for planet X and pv = nRt for Earth. Thus N/V = P/RT for X and n/v = p/Rt for Earth.

Then ratio = N/V//n/v = P/RT//p/Rt = Pt/pT; where P/p = 7.48 X 10^6/1 X 10^5 = 74.8 and ratio = 74.8 (320/575) = N/V//n/v and you can do the math. And, as you say, the density on X is greater than on Earth.

Answer 2

When Neptune was discovered in the late 1800's scientists of the time realized the orbit wasn't quite right and that lead them to believe Neptune was being effected by the gravitational pull of another planet. The Astronomer Perceval Lowell called that unknown planet Planet X and spent like 30 years looking for it. Pluto was discovered in 1930. The sound of Planet X lingered on in the public imagination so you also have 1950's Sci-fi movies like The Creature From Planet X.

Answer 3

with five posts in the last few min, it looks like you want someone to do your homework.