41. plastic bags thin sheets of plastic are used to make
items such as grocery bags. the sheet...
Chemistry, 11.10.2019 05:20, porkhappycom
41. plastic bags thin sheets of plastic are used to make
items such as grocery bags. the sheets move under a
source of promethium-147, emitting beta particles. the
radiation intensity, measured under the plastic sheets,
is used to monitor the thickness of the plastic. during
this process, promethium changes into which element?
Answers: 2
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4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:
Answers: 1
Chemistry, 22.06.2019 17:10, mikeeway33
Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.
Answers: 2
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Answers: 1
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Answers: 3
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