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2 years ago

What defines endothermic reactions and exothermic reactions? Select all that apply.

Chemistry

2 answers:

Sergio039 [100]2 years ago

7 0

Answer:

The answer to your question is A and B

Explanation:

Chemical reactions can be classified by the energy that they need to proceed or the energy they release.

Endothermic reactions are reactions that require energy to proceed most of the time this energy is in the form of heat.

Exothermic reactions are reactions that release energy to proceed, this energy could be in the form of heat or light.

Sati [7]2 years ago

3 0

The answer should be C

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Answer:

Explanation:

From the correct question above:

The reaction can be represented as:

$\mathbf{4 NH_3_{(g)}+ 3O_{2(g)} \iff 2N_{2(g)}+ 6H_2O_{(g)} }$

From the above reaction; the ICE table can be represented as:

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I (mol/L) 0.086 0.28 0 0

C -4x -3x +2x +6x

E 0.086 - 4x 0.28 - 3x +2x +6x

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Replacing the value of x, we have:

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