Charles' Law Worksheet (03-08-11)

1) The temperature inside my refrigerator is about 4^degrees Celsius. If I place a balloon in my fridge that initially has a temperature of 22^degrees C and a volume of 0.5 liters, what will be the volume of the balloon when it is fully cooled by my refrigerator? .4L

T - V

4^degreesC - ?

22^degreesC - 0.5 L

V,,1,, = V,,2,,

___________

T,,1,, = T,,2,,

0^degreesC = 273K

4^degreesC = 277K

22^degrees C + 273 = 295K

all temperatures must be Kelvin

0.5 L V,,2,,

_____ = ____

295 277

V,,2,, = .4 L

2) A man heats a balloon in the oven. If the balloon initially has a volume of 0.4 liters and a temperature of 20^degreesC, what will the volume of the balloon be after he heats it to a temperature of 250^degreesC? .7 L

T - V

250^degreesC - ?

20^degreesC - 0.4 L

V,,1,, = V,,2,,

___________

T,,1,, = T,,2,,

250^degreesC = 523K

20^degrees C + 273 = 293K

all temperatures must be Kelvin

0.5 L V,,2,,

_____ = ____

523 293

V,,2,, = .4 L

V,,2,, = .7 L

3) On hot days, you may have noticed that potato chip bags seem to "inflate", even though they have not been opened. If I have a 250 mL bag at a temperature of 19^degreesC, and I leave it in my car which has a temperature of 60^degreesC, what will the new volume of the bag be? 22.84 mL

523   19

___   __

V,,2,, 333

4) A soda bottle is flexible enough that the volume of the bottle can change even without opening it. If you have an empty soda bottle (volume of 2 L) at room temperature (25^degreesC), what will the new volume be if you put it in your freezer (-4^degreesC)? 1.8 L

298   25

___   ____

269  V,,2,,