*11th grade chemistry* help

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In summary, the problem is to determine the volume of a balloon when it is fully cooled in a refrigerator. The initial temperature of the balloon is 22° C and the volume is 0.5 liters. The formula to convert from Celsius to Kelvin is "C° + 273.15". By using Charles' Law, the correct volume of the balloon when it is fully cooled in the refrigerator is 0.53247 liters. The mistake was not using Charles' Law in the initial calculation.
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The temperature inside my refrigerator is about 4° celsius. If I place a balloon in my fridge that initially had a temperature of 22° C and a volume of 0.5 liters, what will be the volume of the balloon when it is fully cooled in my refrigerator?

Ok now the problem I have here is that the teacher says to always convert C to kelvin (i think that's it). And the formula for that is "C° + 273.15". So well uhhh I don't know what my problem is but I have a feeling I didnt do this right. I got V = .53247 liters. Is that right?

What I did was multiplied 295.15 (which is 22° C in kelvin) by 0.5 liters. I got 147.575. So I divided 147.575 by 277.15 (which is 4° C in kelvin) which got me .53247 liters.

Please help cause I just got to know how to do this so I can do the other 20 or so problems.
 
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  • #2
So, you're showing that the balloon expands as it gets colder? I don't think so.

How you work this rather depends on what you were taught. You can do it with the Ideal Gas Law (assuming pressure remains constant), or you could try Charles' Law:

http://members.aol.com/profchm/charles.html
 
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  • #3
Yeah my bad I got it working now. I forgot to use Charles law lol.
 

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