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.
Answer:
3) The People
Explanation:
Members Of Congress In Both Houses ( Democrats And Republicans ) Are Elected By Direct Popular Vote. Senators Are Elected Via A Statewide Vote ( The People All Around The World ) And Representatives Are Elected By Voters In Each Congressional District.
Answer:
C3H7NO2
Explanation:
The chemical formula of Alanine is C3H7NO2 and it belongs to almost all food category because it is present in one food of each food category such as dairy products, meat, nuts, soy, and whole grains etc. Alanine is a nonessential amino acid means that it does not directly obtained from the diet but it can be produced by the body using raw materials present in the food.
<span>The correct answer is the last statement. Centrifugation is to separate the undissolved particles of a mixture into layers. It separates a homogeneous mixture by spinning it at high speeds. The precipitate settles at the bottom while the solution is clear.</span>
