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Ainat [17]
4 years ago
10

What is the maximum number of electrons that can be contained in the first, second, third, and fourth energy levels, respectivel

y? Express your answer as integers separated by commas. View Available Hint(s)
Chemistry
1 answer:
Marysya12 [62]4 years ago
5 0

Answer:First energy level = 2electrons

Second energy level = 8 electrons

Third energy level = 18 electrons

Fourth energy level = 32 electrons

Explanation: Each energy level can contain up to 2n^2 electrons. Where n indicates number of level

For first energy level where n=1

Number of electrons = 2(1)^2 = 2

For second energy level where n =2 Number of electrons = 2(2)^2 =8

For Third energy level where n=3

Number of electrons=

2(3)^2 = 18

For fourth energy level where n=4

Number of electrons =

2(4)^2 = 32

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What volume is used to calculate the volume of a solid object ​
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Answer:

cubic measurements

Explanation:

i.e. cubic meter or cubic centimeter

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Two chemical bonds unite three atoms into a molecule, what type of bonds are they
marishachu [46]

Answer:

They are covalent bond.

Explanation:

For example; Water which is formed by the combination of 2 hydrogen and 1 oxygen and both are non-metal element.

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3 years ago
As the two parental (template) DNA strands separate at a replication fork, each of the strands is separately copied by a DNA pol
Lapatulllka [165]

Answer:

Synthesis of leading strand:

<em>daughter strand elongate towards replication fork</em>

<em>only one primer is needed</em>

<em>made continuously</em>

Synthesis of the lagging strand:

<em>multiple primers needed</em>

<em>daughter strand elongates away from replication fork</em>

<em>made in segments</em>

Synthesis of both:

<em>synthesized in 5' to 3'</em>

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Explanation:

The replication of DNA involves the unwinding of the double helix structure by the helicase enzyme after which RNA primer binds to form a bubble known as the <em>replication fork</em>.

DNA can only be replicated in the 5' to 3' direction because the <em>polymerase that is responsible for the elongation of new strands can only add nucleotides in the 5' to 3' direction. </em>

Hence, the leading strand is replicated continuously in this direction while the lagging strand is replicated discontinuously or fragments known as the okazaki fragments. <em>The discontinuous replication of the lagging strand therefore requires different primers biding at multiple sites on the DNA strand.</em>

Because of the nature of replication of the lagging strand, the <em>elongation of the fragments moves away from the replication fork while that of the leading strand moves towards the replication fork.</em>

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3 years ago
Use the equation to answer the question
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CH4 + 2O2→CO2 + 2H2O

Explanation:

CH4 + O2→CO2 + H2O

First look at the C atoms. At first glance they are balanced with 1 C on each side.

Now look at the H atoms. They are not balanced. There are 4 H atoms on the left side and 2 H atoms on the right. Place a coefficient of 2 in front of the H2O. We now have 4 H atoms on both sides.

CH4 + O2→CO2 + 2H2O

Now look at the O atoms. They are not balanced. There are 2 O atoms on the left side and 4 on the right. Place a coefficient of 2 in front of the O2. We now have 4 O atoms on both sides.

CH4 + 2O2→CO2 + 2H2O

The equation is now balanced. Each side has 1 C atom, 4 H atoms, and 4 O atoms.

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