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Andrew [12]
3 years ago
14

Lewis structures are used to represent ___.

Chemistry
2 answers:
dezoksy [38]3 years ago
6 0
The free electrons available and the electrons participating in making the bond
kifflom [539]3 years ago
6 0
Lewis structures and dot diagrams are used to represent the molecular structures of compounds.  They show the lone pairs of electrons and covalent intramolecular bonds.
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Answer:

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Explanation:

To decrease the temperature of the solution there are necessaries:

4,184J/g°C×(5,0°C-25,0°C)×(100,0g+X) = -Y

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Where x are grams of NH₄NO₃ you need to add and Y is the energy that you need to decrease the heat.

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I hope it helps!

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