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MariettaO [177]
3 years ago
8

2.Choose the correct order of the layers of the Earth from the outermost to the innermost layer

Chemistry
1 answer:
Artyom0805 [142]3 years ago
4 0
A and C are your anwser
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What is the energy required to remove an electron from an atom in the gaseous state called
KatRina [158]

Answer:

The energy required to remove the the electrons from gaseous atom is called  ionization energy.

Explanation:

Ionization energy:

The amount of energy required to remove the electron from gaseous atom is called ionization energy.

Trend of ionization energy in periodic table:

Along period:

The atomic size tend to decrease in same period of periodic table with increase of atomic number because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.

Along group:

Atomic size increases with increase of atomic number from top to bottom. The nuclear attraction on valance shell became weaker and thus it becomes easy to remove an electron from valance shell and this can be done with less amount of energy. That's why  ionization energy decreases from top to bottom.

4 0
3 years ago
Read 2 more answers
Marine organisms supply the largest percentage of the protein consumed by humans. What does this fact indicate?
sukhopar [10]

the ocean is closely tied to human health so there is higher demand for fisheries to supply many sea life organisms for food and may directly be a cause in the drop sea life population over the years. this also raises the price of the dish because supply doesn't meet demand

3 0
4 years ago
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What are use of ammonical liquor​
denis-greek [22]

ammoniacal liquor is simply concentrated ammonia.

<u>It has the following uses;</u>

Used as a refrigerant gas and in air-conditioning equipment.

Used to purify water supplies.

Used as a building block in the manufacture of plastics, explosives, fabrics, pesticides and dyes.

6 0
3 years ago
How many moles Of H2O will be produced from 42.0 g of H2O2?
d1i1m1o1n [39]
Molar{Mass} H_{2}O_{2} =2*16.0+2*1.0= 34.0 g/mol&#10;&#10;42.0 g H_{2}O_{2}* \frac{1 mol H_{2}O_{2}}{34.0 g H_{2}O_{2}} = 1.24 mol H_{2}O_{2}&#10;&#10;2H_{2}O_{2} --\ \textgreater \ 2 H_{2}O +O_{2}&#10;\\2 mol  ----2 mol   (from// reaction)&#10;&#10;\\1.24 mol ---1.24 mol (from  the problem)&#10;&#10;Answer: 1.24 mol H_{2}O.
3 0
3 years ago
State the type of bonding—ionic, covalent, or metallic—you would expect in each:<br> (b) MgCl₂(s);
IceJOKER [234]

MgCl2 is an ionic compound because chemical bonds in the molecule are formed by the transfer of electrons among Mg and Cl atoms.

<h3>What is chemical bond ?</h3>

A chemical bond is a strong bond that can be formed between atoms, ions, or molecules to create chemical compounds. The bond may be created by the sharing of electrons in covalent bonds or by the electrostatic attraction of two oppositely charged ions, as in ionic bonds. Covalent, ionic, and metallic bindings are examples of "strong bonds" or "primary bonds," whereas dipole-dipole interactions, the London dispersion force, and hydrogen bonding are examples of "weak bonds" or "secondary bonds."

The positively charged protons in the nucleus and the negatively charged electrons in its orbit are attracted to one another by the basic electromagnetic force.

To learn more about chemical bonds from the given link:

brainly.com/question/819068

#SPJ4

3 0
2 years ago
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