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yarga [219]
3 years ago
10

Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of

the atom, but they are not in the correct order. An image at the left labeled W with overlapping red and blue balls in the center with a circular fuzzy green cloud outside them. An image at center-left labeled X with a purple ball in the center surrounded by overlapping concentric black ovals, each with a small green ball on each of the 6 ovals. An image at center right labeled Y with a large black cross in a purple circle with a black line around the purple, with 10 small green balls dispersed within the purple circle. An image at right labeled Z with a purple center outlined in black with two concentric black circles around the center, the inner circle having 2 small green balls on it and the outer circle having 8 small green balls on it. In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one? A. Y, X, Z, W B. Y, Z, W, X C. W, Z, X, Y D. W, Y, Z, X
Chemistry
2 answers:
stepladder [879]3 years ago
8 0

Answer:

the answer is A. Y, X, Z, W

Explanation:

I took the test

Rudik [331]3 years ago
5 0

Answer:

Y X Z W

Explanation:

I took test.

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Calculate the energy per photon (in J) associated with a frequency of 1260 kHz. Submit answer in scientific notation using the f
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Taking into account the definition of photon and energy of a photon, the energy per photon is 8.3538×10⁻³⁸ J.

<h3>Energy of a photon</h3>

Electromagnetic radiation carries energy, which can be absorbed or emitted. To explain the processes of emission and absortion, Plank and Einstein proposed that the energy of radiation is composed of indivisible units (quanta). In each elemental process only a quantum of light can be emitted or absorbed. Each of these quanta was called a "photon".

The exchanges of energy between matter and radiation take place not continuously, but by discrete and indivisible quantities or quanta of energy. The quantum of energy is proportional to the frequency of radiation.

The relationship between the amount of energy (E) transported by the photon and its frequency (f) is determined by the following expression:

E=h×f

where:

  • E is the energy of a photon.
  • h is the Planck's constant h.
  • f is the frequency of electromagnetic radiation.

<h3>Energy per photon</h3>

In this case, you know:

  • h=  6.63*10⁻³⁴ Js
  • f= 1260 kHz= 1,260,000 Hz= 1.26×10⁶ Hz (being 1 kHz=1000 Hz)

Replacing in the definition of energy of a photon:

E= 1.26×10⁶ Hz× 6.63×10⁻³⁴ Js

<u><em>E= 8.3538×10⁻³⁸ J</em></u>

Finally, the energy per photon is 8.3538×10⁻³⁸ J.

Learn more about energy of a photon:

brainly.com/question/8924116

brainly.com/question/6945706

brainly.com/question/8000078

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