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Alina [70]
3 years ago
15

Explain the alignment of Earth, Sun and Moon during a lunar and solar eclipse.

Chemistry
1 answer:
bagirrra123 [75]3 years ago
8 0

Answer: A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun, Earth, and Moon are aligned exactly with the Earth in the middle.

Explanation:

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A chemical equilibrium, the amount of (blank) because( blank)
lianna [129]

Answer:

the amount of product and reactant remains constant because the rates of the foward and reverse reactions are equal

Explanation:

4 0
3 years ago
what order does covalent bond, dipole-dipole, hydrogen bond, ionic bond, metalic bond, and london dispersion bond for strength?​
jarptica [38.1K]

Answer:The major types of solids are ionic, molecular, covalent, and metallic. ... (network) , or metallic, where the general order of increasing strength of interactions. ... In ionic and molecular solids, there are no chemical bonds between the ... by dipole –dipole interactions, London dispersion forces, or hydrogen ...

Explanation:

Hope this will help you

7 0
3 years ago
Select the pH value you would expect for each of these solutions. an aqueous solution of HNO3 an aqueous solution of NaCl an aqu
Neko [114]

Answer:

An aqueous solution of HNO_3 will be an acid and have a pH of less than 7.

An aqueous solution of NaCl will be a neutral solution and have a pH equal to 7.

An aqueous solution of NaOH will be an base and have a pH of more than 7.

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,  

pH = - log [H⁺]

pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH < 7 represents acidic medium and pH > 7 represents basic medium.

Thus,

<u>An aqueous solution of HNO_3 will be an acid and have a pH of less than 7.</u>

<u>An aqueous solution of NaCl will be a neutral solution and have a pH equal to 7.</u>

<u>An aqueous solution of NaOH will be an base and have a pH of more than 7.</u>

4 0
4 years ago
Read 2 more answers
Which of these is inorganic 1) leaf 2) earthworms 3) minerals 4) bacteria ​
Verdich [7]

Answer:

Explanation:

Bacteria I think

6 0
3 years ago
Read 2 more answers
As the given number of neutrons in the nucleus of a given atom of an element increases, the atomic number of that elementa. decr
inysia [295]
I know it is far late but the atom number remains the same
8 0
3 years ago
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