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evablogger [386]
3 years ago
11

Which of the following statements is true about energy quantization at the atomic level? Electrons in the outermost orbits are t

he most stable. Electrons in all the orbits around the nucleus have the same amount of energy. Electrons in the orbit closest to the nucleus have the least amount of energy. Electrons absorb or release the same amount of energy independent of the energy levels.
Chemistry
1 answer:
MAVERICK [17]3 years ago
8 0
<h2>Answer:</h2>

The correct answer is option C which is, "Electrons in the orbit closest to the nucleus have the least amount of energy".

<h3>Explanation:</h3>
  • There are different orbitals around the nucleus on which the electrons moves around the nucleus.
  • These orbitals have a specific energy, due to which they are known as energy levels.
  • The energy level near to the nucleus has least amount of the energy and the energy of the orbitals increase as the distance of the orbitals increase to the nucleus.
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maxonik [38]

Answer: Galaxy

Explanation: A galaxy is a large system of stars held in place by mutual gravitation.

4 0
3 years ago
Which chemical property deals with the ability of a substance being able to
Fantom [35]

\large\underline{\bf\red{Solution:-}}

The chemical property deals with the ability of a substance being able to burn is called combustibility [ option b ] .

<u>More</u><u> to</u><u> know</u><u> </u><u>:</u><u>-</u>

<em>1</em><em>)</em><em> </em><em>Combustion</em><em> </em><em>:</em><em>-</em>

Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives out heat.

The fuel can be any one of the 3 states of matter that is - solid , liquid & gases .

Examples of combustible substances :-

Solid - Coal

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Gas - Hydrogen , Oxygen , etc .

5 0
3 years ago
Read 2 more answers
How many moles is 0.025 g of NaCO3? (Show Your Work)
poizon [28]

mol of Na2CO3 = 2.36 x 10⁻⁴

<h3>Further explanation</h3>

Given

Mass : 0.025 g of Na2CO3

Required

moles

Solution

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass  :

mol = mass : molar mass

mass = mol x molar mass

Input the value :

mol = mass : MW Na2CO3

mol = 0.025 g : 106 g/mol

mol = 2.36 x 10⁻⁴

4 0
2 years ago
Why is the cloning of Dolly the sheep important to humans? Animals that produce human medicines could be cloned. Cloned animals
a_sh-v [17]

Answer:

C. better meat

Explanation:

Farmers always are looking to better their stock to possibly increase milk production or increase the meat quality.

5 0
3 years ago
Read 2 more answers
The system described by the reaction CO(g)+Cl2(g)⇌COCl2(g) is at equilibrium at a given temperature when PCO= 0.26 atm , PCl2= 0
givi [52]

<u>Answer:</u> The new pressure of CO is 0.09 atm

<u>Explanation:</u>

For the given chemical reaction:

CO(g)+Cl_2(g)\rightleftharpoons COCl_2(g)

The expression of K_p for above equation follows:

K_p=\frac{p_{COCl_2}}{p_{CO}\times p_{Cl_2}}             .......(1)

We are given:

p_{COCl_2}=0.66atm\\p_{CO}=0.26atm\\p_{Cl_2}=0.15atm

Putting values in above equation, we get:

K_p=\frac{0.66}{0.15\times 0.26}\\\\K_p=16.92

Addition pressure of chlorine added = 0.39 atm

Now, the equilibrium is re-established:

                    CO(g)+Cl_2(g)\rightleftharpoons COCl_2(g)

Initial:            0.26     0.15             0.66

At eqllm:     0.26-x   0.54            0.66+x

Putting values in expression 1, we get:

16.92=\frac{(0.66+x)}{(0.26-x)\times 0.54}\\\\x=0.17

So, new pressure of CO = 0.26 - x = (0.26 - 0.17) = 0.09 atm

Hence, the new pressure of CO is 0.09 atm

4 0
3 years ago
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