Respuesta :

if pressure is constant ...

and initial temperature is 273 K then,

V1 / T1 = V2 / T2

253.2 / 273 = 165.4 / T2

T2 = 178.33 K

The question is incomplete. Here, is the complete question:

A balloon has a volume of 253.2 mL at 356 K. The volume of the balloon is decreased to 165.4 mL. What is the new temperature?

Answer: The new temperature is 232.6 K.

Explanation:

Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

[tex]V\propto T[/tex]     (At constant pressure and number of moles)

[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]

where,

[tex]V_1[/tex] = initial volume of gas  = 253.2 ml

[tex]V_2[/tex] = final volume of gas  = 165.4 ml

[tex]T_1[/tex] = initial temperature of gas= 356 K

[tex]T_2[/tex] = final temperature of gas  = ?

Putting in the values:

[tex]\frac{253.2}{356}=\frac{165.4}{T_2}[/tex]

[tex]T_2=232.6K[/tex]

Therefore, the new temperature is 232.6 K.