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Marina86 [1]
3 years ago
12

Please help I’m being timed In many thermodynamically favored reactions, the total bond energy of the products is lower than the

total bond energy of the reactants. Therefore, thermodynamically favored reactions are often
A) exothermic

B) endothermic

C) conducted in warm conditions

D) conducted in cold conditions
Chemistry
1 answer:
zzz [600]3 years ago
5 0
The answer is A, exothermic
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How many copper atoms are in 70g of copper
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Answer:

n = 6.634\times 10^{23}\,atoms

Explanation:

The total amount of atoms is found by multiplying Avogradro's Number and the number of moles:

n = \left(6.022\times 10^{23}\,\frac{atoms}{mol} \right)\cdot \left(\frac{70\,g}{63.546\,\frac{g}{mol} } \right)

n = 6.634\times 10^{23}\,atoms

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In the oxidation reduction reaction 2FeCl2 + Cl2 = 2FeCl3 what substance is reduced? What substance is oxidized?
marishachu [46]

Answer:

Iron is oxidized while chlorine is reduced.

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Oxidation:

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Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

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in this reaction the oxidation state of iron is increased from +2 to +3. That's why iron get oxidized and it is reducing agent because it reduced the chlorine. The chlorine is reduced from -2 to -3 and it is oxidizing agent because it oxidized the iron.

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The iron atom gives it three electrons to three atoms of chlorine and gain positive charge while chlorine atom accept the electron and form anion.

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In a 0.01 M solution of HCl, Litmus will be
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