1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tom [10]
2 years 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]2 years 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

You might be interested in
The temperature of a 500. ml sample of gas increases from 150. k to 350. k. what is the final volume of the sample of gas, if th
maw [93]
<span>pv=nrt; Pressure and moles are constant. p=nr(150k)/.5 L; Pressure initially After temp change pv=nrt; What is volume? v=nr(350k)/p; p is constant so we can substitute from above v=nr(350k)/(nr(150k)/.5 L)) v=350/150/.5 L v=4.66 liters</span>
3 0
3 years ago
Read 2 more answers
2. Using the following data, calculate the average atomic mass of magnesium (give your answer to the nearest
Savatey [412]

Answer: 24.309amu

Explanation:

4 0
3 years ago
Match each part of the electrochemical cell with its function.
umka21 [38]

Hi!


The correct options would be:

1. Cathode - <em>reduction</em>

The cathode is the negatively charged electrode, and so has an excess of electrons. Cations (positively charged ions) are attracted to the cathode, and gain electrons to acquire a neutral charge. The process in which a gain of electron occurs is called reduction.


2. Anode - <em>oxidation</em>

The opposite occurs at the anode which is positively charged and attracts negatively charged ions, anions. These anions lose their electrons at the anode to acquire a neutral charge, and the process involving loss of electrons is known as oxidation.


3. Salt Bridge - <em>ion transport </em>

Salt bridge is a physical connection between the the anodic and cathodic half cells in an electrochemical cell and is a pathway that facilitates the flow of ions back and forth these half cells. Salt bridge is involved in maintaining a neutral condition in the electrochemical cells, and its absence would result in the accumulation of positive charge in the anodic cell, and negative charge in the cathodic cell.


4. Wire - <em>electron transport </em>

Wires have a universal role of being a pathway for the transport of electrons in circuit. This role is also the same in the wires involved in an electrochemical cells where they are used to transport electrons from the anodic half cell, and this electron transport results in the generation of electricity in the internal circuit of the electrochemical cell.


Hope this helps!

4 0
3 years ago
How fast is an electron travelling If it has a wavelength of 8.20 km?
Lemur [1.5K]

The electron is travelling with a velocity of 1.123 × 10⁷m/s if it has a wavelength of 8.20 km.

<h3>How to calculate velocity of an electron?</h3>

The velocity at which an electron travels can be calculated using the following formula:

λ = h/mv

Where;

  • H = Planck's constant
  • m = mass of electron
  • v = velocity of electron
  • λ = wavelength

  • Planck's constant (h) = 6.626 × 10−³⁴ J⋅s.
  • mass of electron (m) = 9.109 × 10−³¹ kg
  • wavelength = 8200m

8200 = 6.626×10−³⁴ / 9.109 × 10−³¹V

8200 = 7.3 × 10-⁴V

V = 8200 ÷ 7.3 × 10-⁴

V = 1.123 × 10⁷m/s

Therefore, the electron is travelling with a velocity of 1.123 × 10⁷m/s if it has a wavelength of 8.20 km.

Learn more about velocity at: brainly.com/question/13171879

#SPJ1

5 0
1 year ago
A student is shown a simple model of particles that make up a liquid,as shown.
trapecia [35]
Answer:
            Option-D : <span>Decrease the velocities of the particles, and decrease the space between the particles.

Explanation:
                     The solid state of matter is composed of particles closely packed with a minimum space between them. This closed packing of particles occur due to strong interatomic or intermolecular interactions between particles. Therefore, solids particles have zero translational and rotational motions and only show vibrational motions. So, decrease in velocity and decrease in space between particles is the right answer for making solids.</span>
6 0
3 years ago
Other questions:
  • Name all of the alkene isomers, c6h12, that contain an unbranched chain and that do not have e/z isomers.
    13·1 answer
  • Reactions which do not continue to completion are called _____reactions
    7·2 answers
  • What is the best describtion of the side of the moon that faces earth?
    11·2 answers
  • The indicator used in this redox titration is sulfuric acid
    13·1 answer
  • Phenomenon: If an astronaut throws a wrench in outer space with no other forces acting on it, the wrench will continue moving fo
    12·2 answers
  • A container is filled to a volume of 55.2 L at 61 °C. While keeping the
    14·2 answers
  • Describe transfer RNA job.<br> pls thank you
    7·1 answer
  • Zamir and Talia raced through a maze. Zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m
    13·2 answers
  • 2. Describe How are the two forms of energy<br> carried by waves and matter related?
    10·1 answer
  • What is the frequency of a photon that has an energy of 7.2 × 10^-16 J ?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!