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Nostrana [21]
3 years ago
7

What is the second hottest layer of the atmosphere?

Chemistry
1 answer:
kherson [118]3 years ago
7 0
Well, I say the answer is Thermosphere! Hope I helped :) 
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Answer:

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Explanation:

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Hence when the biuret reagent is added to an unknown substance and it turns purple, the unknown substance is a protein

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