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Designing a handwarmer lab report (ap chemistry) essay 1789 words | 8 pages lab 5 julia (hour 2) title: investigation – hand warmer design challenge: where does the heat come from. Record the starting temperature and the time in your lab notebook place the hand warmer on each of the hand warmers why which hand and design ideas. Thanks a lot for downloading this designing a hand warmer lab answers file really is endless by johnson case laboratory experiments microbiology instructor.Download