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IrinaK [193]
3 years ago
14

If an ice cube melts at 0oC but water also freezes at 0oC, what is the difference between melting and freezing in terms of (a) t

he energy involved in the phase changes and (b) particles of the substances during the phase changes?
Chemistry
2 answers:
Zanzabum3 years ago
8 0
<span>a.) the energy involved in the phase changes</span>
alexdok [17]3 years ago
3 0
<span>If an ice cube melts at 0oC but water also freezes at 0oC, what is the difference between melting and freezing in terms of (a) the energy involved in the phase changes</span>
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How many chlorine ions are required to bond with one aluminum ion and why??
antiseptic1488 [7]
3 Chlorine ions are required to bond with one aluminum ion.

In ionic bonds, metals atoms loses all its outermost shell electrons to form a cation. While, non metal atoms gains however many electrons in order to make its outermost electron shell be 8 (or 2 if there's only one shell).

Therefore, form the periodic table, we can see that aluminum has a atomic number of 13, which makes its electron arrangement be 2,8,3. So, in order to form a aluminum ion, an Al atom must lose 3 electrons. On the other hand, Chlorine has a atomic number of 17, which means it has the electron configuration of 2,8,7. It has to gain only 1 electron to have 8 outermost shell electron.

Thereofre, 3 Chlorine atom are required to gain all 3 electrons given out by just 1 aluminum ion.
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3 years ago
What do you call A compound composed of two oppositely charged elements?
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Answer: Ionic Bond

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Hope this helped!

5 0
4 years ago
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When 4.50 L of hydrogen gas react with an excess of nitrogen gas at standard temperature and pressure, how many liters of ammoni
VARVARA [1.3K]

Answer:

           3.0 L of NH₃

Solution:

The equation is as follow,

                                    N₂  +  3 H₂     →       2 NH₃

According to equation,

          67.2 L (3 mole) H₂ at STP produces  =  44.8 L (3 mole) of NH₃

So,

                            4.50 L of H₂ will produce  =  X L of NH₃

Solving for X,

                     X  =  (4.50 L × 44.8 L) ÷ 67.2 L

                     X  =  3.0 L of NH₃

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3 years ago
What royal scientist used the 29th
olchik [2.2K]

J. Dorman probably was the scientist.

I have a question too. Can you please help me with that? I have a test tomorrow. Thank you!

1. True or False? When you charge your laptop, you are separating charges in the laptop battery.


2. True or False? When you use your laptop, the battery becomes more neutral as it runs low on power.

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Which is a major disadvantage of using wind power?
AlladinOne [14]
I guess the answer is D
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3 years ago
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