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Old 02-10-2006, 01:27 PM
allforyou allforyou is offline
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Default Project about weight change.. need help!

ok my sons class room is having a contest. here is what students need to do. They need to find an object that over time, decreases in weight, , preferablly within 24 hours. this object hsould be the size of a shoebox. This has got us puzzled..im thinking we can use dry ice, but how long would it take for dry ice to evaporate... and would that leave a mess? please help we are desperate
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