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AlekseyPX
3 years ago
6

Which of the following BEST supports the Big bang theory of the origin of the universe?

Chemistry
1 answer:
inysia [295]3 years ago
7 0

Answer: first one

Explanation:

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How do you know if the reaction is exothermic
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Hey there!
Exothermic reactions release heat, causing its temperature to fall. If the reaction is lessening the temperature of the object while releasing all the heat, then you know that the reaction is indeed exothermic. Hope this helps!
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What is the [OH-] of a substance that has a pH of 11?
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Answer:

0.001 M OH-

Explanation:

[OH-] = 10^-pOH, so

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Answer:

c.

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