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Inessa05 [86]
3 years ago
14

For electrons to be emitted from a metal surface, incident radiation with an energy in excess of the work function must be used.

What happens to the excess energy of the incident radiation?
Chemistry
1 answer:
Tamiku [17]3 years ago
3 0

Answer: The excess energy is converted into kinetic energy for the motion of the ejected electrons.

Explanation: It requires a certain energy to eject an electron from a metal surface. This energy is known as the work function (W), which varies from metal to metal. Electrons can gain energy by interacting with photons. If a photon has an energy at least as big as the work function, the photon energy can be transferred to the electron and the electron will have enough energy to escape from the metal. A photon with an energy less than the work function will never be able to eject electrons.

So, a particular amount of energy is used to break the barrier and match the work function of the metal surface & the remaining energy is converted into kinetic energy for the motion of the ejected electrons.

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Explanation:

This is because gas particles are free to move as they are not held in place by strong molecular forces while particles in a solid are

8 0
3 years ago
How much does one teaspoon of baking soda affect Cookies?
Gekata [30.6K]

Answer:

Explanation:

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2 years ago
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3 0
3 years ago
A chemist has 3.55x1022 molecules of nitrogen monoxide. How
Alina [70]

Answer:

<h2>0.059 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{3.55 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.05897...

We have the final answer as

<h3>0.059 moles</h3>

Hope this helps you

6 0
3 years ago
C= ( F - 32) / 1.8<br> 86 F = ?
egoroff_w [7]

<h3>⇒c =  \frac{f - 32}{1.8}</h3><h3>⇒c =  \frac{86 - 32}{1.8}</h3><h3>⇒c =  \frac{54}{1.8}</h3><h3>⇒c = 30</h3>

<em>Hence</em><em>,</em><em> </em><em>84</em><em>°</em><em>F</em><em> </em><em>is</em><em> </em><em>30</em><em>°</em><em>C</em><em> </em><em>in</em><em> </em><em>Celsius</em><em>.</em><em>.</em>

7 0
2 years ago
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