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OLga [1]
3 years ago
9

Today is a historic day! Why? Write a paragraph.

Chemistry
2 answers:
alekssr [168]3 years ago
3 0

Answer:

JOE BIDEN GOT ELECTED

Explanation:

hram777 [196]3 years ago
3 0

Answer:

The orange clown is gone

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The correct name of the compound Mn3(PO4)2 is  definitely the last option represented above <span>D. manganese(II) phosphate. I am pretty sure this answer will help you

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Which electron transition represents a gain of energy
Helen [10]

Answer:

The transition from lower energy level to higher energy level require a gain of energy.

Explanation:

When transition occur from lower energy level to higher energy level require a gain of energy. Electron could not jump unto higher energy level without gaining thew energy.

When electron jump into lower energy level from high energy level it loses the energy.

For example electron when jumped from 2nd to 3rd shell it gain energy and when in return back to 2nd shell from 3rd shell it loses energy.

The process is called excitation and de-excitation.

Excitation:

When the energy is provided to the atom the electrons by absorbing the energy jump to the higher energy levels. This process is called excitation. The amount of energy absorbed by the electron is exactly equal to the energy difference of orbits.

De-excitation:

When the excited electron fall back to the lower energy levels the energy is released in the form of radiations. this energy is exactly equal to the energy difference between the orbits. The characteristics bright colors are due to the these emitted radiations. These emitted radiations can be seen if they are fall in the visible region of spectrum.

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4 years ago
Explain why the boiling point of water is a characteristic physical property
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The boiling point of water is a characteristic physical property, because the water won't boil until it reaches the boiling point.
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Im pretty sure the anservis a
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