Question

A balloon filled with helium has a volume of 16.2 L at 289 K. What volume will the balloon occupy at 257 K?

Answer 1

`14.4` liters

Explanation:

At a constant pressure and number of moles, we use Charles's Law, which states that,

`VpropT`

or

`V_1/T_1=V_2/T_2`

And so,

`(16.2 \ "L")/(289 \ "K")=V_2/(257 \ "K")`

`:.V_2=(16.2 \ "L")/(289color(red)cancelcolor(black)"K")*257color(red)cancelcolor(black)"K"=14.4 \ "L"`