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4 years ago

Which part of an atom is involved in chemical reactions?

Chemistry

2 answers:

algol [13]4 years ago

8 0

Answer:

a nucleus and its particles

Explanation:

torisob [31]4 years ago

5 0

Answer: Valence electrons are involved in a chemical reaction.

Explanation:

A chemical reaction takes place when there is an involvement of valence electrons. Bond formation involves either sharing of valence electrons or transfer of valence electrons. Bond breaking involves the separation of valence electrons.

When valence electrons are shared between the atoms, it leads to the formation of covalent bond.

When transfer of electrons takes place from one atom to another atom, it leads to the formation of ionic bond.

Hence, valence electrons are involved in a chemical reaction.

I think is A

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Answer:

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Explanation:

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BARSIC [14]

Answer:

6.2moles of Gold

Explanation:

To solve this problem, we are going to use the mole concept approach.

Given that;

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Now;

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3 years ago

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Romashka [77]

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3 years ago

For a cell whose potential is -0.46 v with 3 moles of electrons exchanged, what is DG?

Feliz [49]

ΔG = -nEF

ΔG = Gibbs free energy change
n = moles of electrones participated in
E = Electrode potential
F = Faraday constant

By substituting,
ΔG = -(3 mol) x 96485 A S/ mol x (-0.46) V
= + 133149.3 J
= + 133 kJ

Hence the answer is "b".

Since ΔG is a positive value, the reaction is non spontaneous reaction.

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3 years ago