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What dose a thermos such as the one shown keep hot drinks hot

2 Answers

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Answer: It is double layered and it is designed to keep the hot/cold air in

when you have the drink inside and it is like a vacuum and keeps the air in

Hope this helps!! : )

User Chrysn
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By Limiting the amount of thermal energy that flows out of the drink

a-pex

User Suddjian
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