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hodyreva [135]
3 years ago
15

What is cataclysmic?

Chemistry
1 answer:
Karolina [17]3 years ago
8 0
Cataclysmic is an adjective used to describe something that is violently destructive. This word is often used in natural disasters like an earthquake, volcanic eruption, floods and tornado. But the use of this word is not limited to these events. It can also be used in emphasizing how something badly turned out.
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What are the amount of moles in 12.15 grams of Magnesium?
zaharov [31]
I think the amount would be a 0.4998 mol
I did moles=mass(g)/A,r
=12.5/24.3 to get that
8 0
3 years ago
What is the oxidation half-reaction for this unbalanced redox equation? cr2o72– + fe2+ → cr3+ + fe3+ cr3+ → cr2o72– cr2o72– → cr
KatRina [158]

Answer:

6Fe^2+(aq) -------> 6Fe^3+(aq) + 6e

Explanation:

The balanced oxidation half equation is;

6Fe^2+(aq) -------> 6Fe^3+(aq) + 6e

A redox reaction is actually an acronym for oxidation-reducation reaction. Since the both reactions are complementary, there can't be oxidation without reduction and there can't be reduction without oxidation.

The main characteristic of redox reactions is that electrons are transferred in the process. The number of electrons transferred is usually deduced from the balanced reaction equation. For this reaction, the balanced overall reaction equation is;

Cr2O7^2–(aq) + 6Fe^2+(aq) +14H^+(aq)→ 2Cr^3+(aq) + 6Fe^3+ (aq) + 7H2O(l)

It is clear from the equation above that six electrons were transferred. Thus six Fe^2+ ions lost one electron each in the oxidation half equation as shown in the balanced oxidation half equation above.

4 0
3 years ago
If Oxygen gains 2 electrons<br> what charge will it have?
Scilla [17]

Answer:

A very powerful one

Explanation:

7 0
3 years ago
Please answer
yKpoI14uk [10]
Long wave I think is the correct answer
7 0
3 years ago
Definition of chemical change
yuradex [85]

Answer:

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.

Explanation:

8 0
3 years ago
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