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Vedmedyk [2.9K]
3 years ago
11

Each energy sublevel contains __________ number of electrons. For example, sublevel D can hold up to _______ electrons. A. the s

ame, 10 B. the same, 14 C. a different, 6 D. a different, 10
Chemistry
1 answer:
Annette [7]3 years ago
3 0

Answer:

Each energy sublevel contains a different number of electrons. For example, sublevel D can contain up to 10 electrons

Explanation:

The atoms are surrounded by propellers that within each propeller there is a certain number of electrons, these electrons jump from orbit to orbit according to the amount of energy they have. The four levels that make up the electronic cloud that surrounds an atom are: s p d f.

When these electrons change orbit or level they release energy in the form of light, which is known as a photon.

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When 220 mL of 1.50x10^-4 M hydrochloric acid is added to 135 mL of 1.75x10^-4 M Mg(OH)2, the resulting solution will be________
siniylev [52]

Answer:

Basic

Explanation:

Considering

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

So,

Moles =Molarity \times {Volume\ of\ the\ solution}

For hydrochloric acid :

Molarity = 1.50\times 10^{-4} M

Volume = 220 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 220×10⁻³ L

Moles =1.50\times 10^{-4} \times {220\times 10^{-3}}\ moles

Moles of hydrochloric acid = 0.000033 moles

For Mg(OH)_2 :

Molarity = 1.75\times 10^{-4} M

Volume = 135 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 135×10⁻³ L

Moles =1.75\times 10^{-4} \times {135\times 10^{-3}}\ moles

Moles of Mg(OH)_2 = 0.000024 moles

According to the given reaction:

Mg(OH)_2_{(aq)}+2HCl_{(aq)}\rightarrow MgCl_2_{(s)}+2H_2O_{(aq)}

1 mole of Mg(OH)_2 reacts with 2 moles of HCl

Also,

0.000024 mole of Mg(OH)_2 reacts with 2*0.000024 moles of HCl

Moles of HCl = 0.000048 moles

Available moles of HCl = 0.000033 moles

Limiting reagent is the one which is present in small amount. Thus, HCl is limiting reagent.

Thus, HCL will be consumed completely and Mg(OH)_2 will be left over. Thus, the resulting solution will be basic.

4 0
4 years ago
What happens on a molecular level when a diatomic molecule is a gas but is then cooled to a solid?
irina1246 [14]

Answer:

As an example of the processes depicted in this figure, consider a sample of water. When gaseous water is cooled sufficiently, the attractions between H2O molecules will be capable of holding them together when they come into contact with each other; the gas condenses, forming liquid H2O. For example, liquid water forms on the outside of a cold glass as the water vapor in the air is cooled by the cold glass.

Explanation:

Hopefully that helps!

4 0
3 years ago
What quantum number of the hydrogen atom comes closest to giving a 24-nm-diameter electron orbit?
Paraphin [41]

<em>n</em> = 15. A Bohr orbit with <em>n</em> = 15 comes closest to having a 24 nm diameter .

The formula for the radius <em>r</em> of the <em>n</em>th orbital of a hydrogen atom is

<em>r</em> = <em>n</em>^2·<em>a</em>

where

<em>a</em> = the Bohr radius = 0.0529 nm

We can solve this equation to get

<em>n</em> = √ (<em>r</em>/<em>a</em>)

If <em>d</em> = 24 nm, <em>r</em> = 12 nm.

∴ <em>n</em> = √(12 nm/0.0529 nm) = √227 = 15.1

<em>n</em> must be an integer, so <em>n</em> = 15.

4 0
3 years ago
5,678cm convert to millimeters
kykrilka [37]
1 cm ------------ 10 mm
5,678 cm ------- ? 

5,678 x 10 / 1 => 56,78 mm 
4 0
3 years ago
Why does a carbonated soft drink lose carbonation when the container is left open?
DENIUS [597]

Pressure decreases when you open the top. Pressure decreases, which favors the formation of H2CO3.

I better get your number.

5 0
3 years ago
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