Boyles Law P1V1 = P2V2 An arrangement of helium balloons in the back of a delivery truck travels from a town at the base of a mountain up the mountain where the air pressure is half the amount. What do you expect to happen to the balloons?

A. The balloons will increase to twice their original volume.
B. The balloons will decease to one fourth their original size.
.C. The balloons will increase to four times their original size.
D. The balloons will decrease to half their original size.

A. The balloons will increase to twice their original volume.

Explanation:

Boyle's law states that the pressure exerted on a gas is inversely proportional to the volume occupied by the gas at constant temperature. That is:

P ∝ 1/V

P = k/V

PV = k (constant)

P = pressure, V = volume.

Let the initial pressure of the balloon be P, i.e. , initial volume be V, i.e. . The pressure is then halved, i.e.

Therefore the balloon volume will increase to twice their original volume.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.