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Tom [10]
1 year ago
5

What is the maximum wavelength, in nm, of light that can eject an electron from a metal with Φ =4.25 x 10–19 J?

Chemistry
1 answer:
Marysya12 [62]1 year ago
8 0

The maximum wavelength, in nm, of light that can eject an electron from the metal, given the data is 467.72 nm

<h3>Data obtained from the question</h3>

From the question given abover, the following data were obtained:

  • Energy (E) = 4.25×10¯¹⁹ J
  • Wavelength (λ) =?

<h3>How to determine the wavelength of the light </h3>
  • Energy (E) = 4.25×10¯¹⁹ J
  • Planck's constant (h) = 6.626×10¯³⁴ Js
  • Speed of light (v) = 3×10⁸ m/s
  • Wavelength (λ) =?

The wavelength of the light can be obtained as illustrated below:

E = hv / λ

Cross multiply

E × λ = hv

Divide both sides by E

λ = hv / E

λ = (6.626×10¯³⁴ × 3×10⁸) / 4.25×10¯¹⁹

λ = 0.00000046772 m

λ = 467.72 nm

Thus, the wavelength of the light that can eject an electron from the metal is 467.72 nm

Learn more about energy:

brainly.com/question/10703928

#SPJ1

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Nuclear reaction occurs when an elementary particle or another nucleus has enough energy to disturb internal structure of a bombarded nucleus to such a level that it undergoes a transition to a different state.

5 0
3 years ago
When sodium peroxide is added to water, sodium hydroxide and oxygen gas is produced.
lukranit [14]

Answer:

The reaction combines the sodium with the hydrogen and oxygen in water to form sodium hydroxide and hydrogen gas, and you get a lot of energy released as heat as well. This heat actually melts any remaining sodium that has not reacted yet, and ignites the hydrogen gas, so you get the bang and the flash.

Explanation:

8 0
2 years ago
All questions attatched :)
eimsori [14]

54. fluorine

55. oxygen

56. they have the same number of protons

57. nucleus 3

Explanation:

54. The element represented by the nucleus 1 have 9 protons and 9 neutrons. The atomic number of the element is equal to the number of protons = 9, so the element is fluorine.

55. The element represented by the nucleus 2 have 8 protons and 10 neutrons. The atomic number of the element is equal to the number of protons = 8, so the element is oxygen.

56. nucleus 2 contains 8 protons and 10 neutrons

nucleus 4 contains 8 protons and 11 neutrons.

The atoms that have the same number of protons but different number of neutrons are called isotopes.

57. nucleus 3 have 10 protons and 10 neutrons and correspond to neon. Neon have 10 electrons (equal to the number of protons) and have the electronic configuration 1s² 2s² 2p⁸. Because all the electrons shells are filled with electrons, neon have a stable electron configuration.

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6 0
2 years ago
We can see water change state, from ice to steam. This is a __________ change in matter. A) chemical B) combustion Eliminate C)
Gemiola [76]

Answer: Option (C) is the correct answer.

Explanation:

When chemical composition of a substance is not changing in a chemical reaction then it is known as a physical change.

For example, when water change state, from ice to steam then it means solid state is changing into gaseous state.

Therefore, it is a physical change.

And, a reaction which causes change in chemical composition is known as a chemical change.

For example, Li + Cl \rightarrow LiCl

Thus, we can conclude that we can see water change state, from ice to steam. This is a physical change in matter.

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3 years ago
For the following exothermic reaction, A+B⇌C+D + Heat, if the temperature is increased, the reaction will experience a shift to
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