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
Gwar [14]
2 years ago
10

The work function of an element is the energy required to remove an electron from the surface of the solid. The work function fo

r palladium is 503.7 kJ/mol (that is, it takes 503.7 kJ of energy to remove 1 mole of electrons from 1 mole of Pd atoms on the surface of Pd metal). What is the maximum wavelength of light that can remove an electron from an atom in palladium metal
Chemistry
1 answer:
uranmaximum [27]2 years ago
4 0

Answer:

λ = 2.38 × 10^(-7) m

Explanation:

We are given the work function for palladium as 503.7 kJ/mol.

Now let's convert this to KJ/electron.

We know from avogadro's number that;

1 mole of electron = 6.022 × 10^(23) electrons

Thus,

503.7 kJ/mol = 503.7 × 1/(6.022 × 10^(23)) = 8.364 × 10^(-22) KJ/electron = 8.364 × 10^(-19) J/electron

Formula for energy of a photon is;

E = hv

Where;

h is Planck's constant = 6.626 × 10^(-34) J.s

v is velocity

Now, v = c/λ

Where;

c is speed of light = 3 × 10^(8) m/s

λ is wavelength of light.

Thus;

E = hc/λ

Making λ the subject, we have;

λ = hc/E

λ = (6.626 × 10^(-34) × 3 × 10^(8))/(8.364 × 10^(-19))

λ = 2.38 × 10^(-7) m

You might be interested in
What is the mass of an atom with 8 protons, 8 electrons, and 8 neutrons?
mafiozo [28]

Answer:An oxygen atom usually has 8 protons, 8 neutrons, and 8 electrons. Looking at the periodic table, oxygen has atomic number 8 and atomic weight 15.999.

Explanation:

5 0
2 years ago
Moraines left by glaciers are different from deposits left by rivers because the rocks left behind are _____.
12345 [234]

Explanation:

unorganized and unsorted i think this is the answer

7 0
3 years ago
Neutrons of an Adam have ____ charges and are located ____ the nucleus.
lyudmila [28]
B) they have no charges and are inside an atom.*
7 0
3 years ago
Why is a chemical equilibrium described as dynamic?
Katen [24]
Because when equilibrium is reached, the reaction is still occurring in both directions, it's just that rate(forward) =rate(reverse) so there is no net change in the concentrations of the reactants or products.
8 0
3 years ago
Read 2 more answers
PLS heLPPP. IM DYINGG
Shkiper50 [21]

Answer:

exothermic

Explanation:

This chemical reaction is an exothermic reaction because heat is liberated into the environment.

In organic chemistry, the reaction is termed a combustion reaction. In such a reaction, a fuel combines with oxygen to produce carbon dioxide and water.

It is an energy transformation from chemical energy to heat energy.

  • An exothermic reaction is one in which heat is liberated to the surrounding.
  • The surrounding becomes hotter at the end of the reaction.

In the reaction depicted, heat is liberated.

4 0
3 years ago
Other questions:
  • What is the numerical value of Avogadro's number?
    8·1 answer
  • Important functional groups in biomolecules include --------
    14·2 answers
  • A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is
    10·1 answer
  • Why is it important to keep good records during a scientific investigation?
    12·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Csf%5Clarge%20%5Cgreen%7B%5Cunderbrace%7B%5Cred%7BQuestion%7D%7D%7D%3A" id="TexFormula1" tit
    5·1 answer
  • Which of the following best matches a part of a living cell with the function it performs?
    8·1 answer
  • Is cellphone is made from renewable resources * true or false
    10·2 answers
  • When using a calorimeter, the initial temperature of a metal is 70.4C. The initial temperature of the water is 23.6C. At the end
    5·1 answer
  • 4. A cube has a length of 6 cm on one side. What would be the cube's densit
    7·1 answer
  • 1. Use your knowledge of valence electrons and how they affect bonds to figure out how carbon (Group 14) and oxygen (Group 16) w
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!