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Vlad [161]
3 years ago
8

What does the period number tell about the energy levels occupied bye electrons in an atom

Chemistry
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

The period number tells which is the highest energy level occupied by the electrons.

Explanation:

  1. The period number (denoted by n) is the outer energy level that is occupied by electrons in an atom.
  2. The period number that an element is in, is the number of energy levels that the element has.
  3. When we move across a period from left to right in a periodic table the number of electrons in atoms increases within the same orbit.
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Convert 4.5 X 1022 molecules of H2O to moles.
noname [10]

Answer:

<h3>The answer is 0.075 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{4.5 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.074750830...

We have the final answer as

<h3>0.075 moles</h3>

Hope this helps you

3 0
3 years ago
What is formed when water chemically combines with carbon dioxide
solong [7]

When water chemically combines with carbon dioxide, a Carbonic acid is formed.

<u>Explanation</u>:

  • Carbon dioxide responds with water in a solution to form a weak acid, carbonic acid. Carbonic acid disassociates into hydrogen particles and bicarbonate particles. The hydrogen particles and water respond with the most basic minerals modifying the minerals.  
  • Carbon dioxide and the other atmospheric gases disintegrate in surface waters. Dissolved gases are in equilibrium with the gas in the atmosphere. Carbon dioxide responds with water in a solution to form the weak acid, carbonic acid. Carbonic acid disassociates into hydrogen particles and bicarbonate particles.  
  • The hydrogen particles and water respond with the most basic minerals altering the minerals. The results of enduring are prevalently clays and soluble particles, for example, calcium, iron, sodium, and potassium. Bicarbonate particles additionally remain in solution; a remnant of the carbonic acid that was utilized to weather the rocks.

5 0
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Which term is defined as “anything that has mass and occupies space”? a -compound b - element c - substance d - matter
Dima020 [189]
The answer is matter
4 0
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Why is Nertic zone particularly rich in living things?
Leya [2.2K]

Answer:

It is rich in organisms because sunlight passes through its shallow water enabling photosynthesis to occur.

Explanation:

I hope that helped!!

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3 years ago
An OH group attached to a hydrocarbon is called a _________ group whereas ______________ is a polyatomic ion with a charge of __
rodikova [14]

Answer:

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3 0
3 years ago
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