When the temperature stays the same, the volume of a gas is inversely proportional to the pressure of the gas. If a balloon is filled with 93 cubic inches of a gas at a pressure of 14 pounds per square inch, find the new pressure of the gas if the volume is decreased to 31 cubic inches.

Respuesta :

Answer:

The new pressure of the gas is 42 pounds per square inches.

Step-by-step explanation:

When the temperature remains constant, the volume of a gas is inversely proportional to the pressure of the gas.

[tex]V\propto \frac{1}{P}[/tex]

We can rewrite the above equation is

[tex]\frac{V_1}{V_2}=\frac{P_2}{P_1}[/tex]  [at constant temperature]

At a pressure of 14 pounds per square inches, a balloon is filled with 93 cubic inches of gas.

The volume of the gas is decreased to 31 cubic inches.

Here,

[tex]V_1[/tex]= 93 cubic inches, [tex]P_1[/tex] = 14 pounds per square inches,

[tex]V_2[/tex]=31 cubic inches, [tex]P_2[/tex] = ?

[tex]\frac{V_1}{V_2}=\frac{P_2}{P_1}[/tex]

[tex]\Rightarrow \frac{93}{31}=\frac{P_2}{14}[/tex]

[tex]\Rightarrow \frac{P_2}{14}=\frac{93}{31}[/tex]

[tex]\Rightarrow {P_2}=\frac{93}{31}\times 14[/tex]

[tex]\Rightarrow {P_2}=42[/tex] pounds per square inches

The new pressure of the gas is 42 pounds per square inches.