The pressure on a 250 ml gas sample is increased from 450 mmHg to STP,
what is the new volume?

V₂  = 150 mL

Explanation:

Given data:

Initial volume of sample = 250 mL

Initial pressure = 450 mmHg (450 /760 = 0.6 atm)

Final pressure = standard = 1 atm

Final volume = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

0.6 atm  × 250 mL = 1 atm × V₂

150 atm. mL = 1 atm × V₂

V₂  = 150 atm. mL/ 1 atm

V₂  = 150 mL

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.