It is a hot, sunny day. the outdoor temperature is 32°c (90°f), and the water temperature is 21°c (70°f). a scuba diver submerses himself while holding a balloon filled with 1.5 l of air. if the balloon shrinks to a volume of 0.5 l at a depth of 20 m, what is the pressure at this depth? (assume that the outdoor pressure is 1 atm.)

initially when balloon is in atmosphere then we have

initial temperature is T = 32 degree C

Initial pressure P = 1 atm

Initial volume V = 1.5 L

now we have number of moles as

so pressure at this depth will be 2.89 atm

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

answerscientific theory;