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iVinArrow [24]
3 years ago
12

Give at least two ways to know if a reaction is endothermic or exothermic

Chemistry
1 answer:
mafiozo [28]3 years ago
5 0

Answer:

An exothermic reaction is a chemical reaction that releases energy by light or heat. Endothermic reaction is a chemical reaction that absorbs energy or heat from its surroundings

Explanation:

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In general terms, exothermic reactions release energy, so the energy goes from the system to the surroundings.
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In which situation is no work considered to be done by a force?
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If the angle is either 0 or 180, that means that there is either negative or positive work, so A and D are not correct.

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What gives the gem amethyst its purplish color?
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2 years ago
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N76 [4]
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Define Acid dissociation constant constant
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Answer:

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Explanation:

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