Homework Help: Science

Posted by Lauren on Saturday, February 12, 2011 at 3:42pm.

Helium gas in a balloon occupies 2.5 L at 300.0 K. The balloon is dipped into liquid nitrogen that is at a temperature of 80.0 k. What will the volume of the helium in the balloon at the lower temperature be?

I got a weird answer like .66667 and i used charles law

Science - bobpursley, Saturday, February 12, 2011 at 3:47pm
assuming pressure would be the same (it is not if one is submerged in a liquid).

V1/T1=V2/T2

V2=2.5*80/(300)=2.5*4/15 which is about in my head 1/4*2.5 which is your answer
Science - Lauren, Saturday, February 12, 2011 at 4:24pm
thanku!

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