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
zavuch27 [327]
3 years ago
11

Electrons are ejected from a surface with speeds ranging up to 1380 km/s when light with a wavelength of 173 nm is used. What is

the work function of this surface? The speed of light is 2.99792 × 108 m/s and Planck’s constant is 6.62607 × 10−34 J · s. Answer in units of eV.
Chemistry
1 answer:
mixer [17]3 years ago
8 0

Answer:

ΔE(work)= 692 Kj/mole e⁻ = 4.32 x 10²⁴ eV/mole e⁻

Explanation:

ΔE = hc/λ = (6.63 x 10⁻³⁴j·s)(2.99792 x 10⁸m/s)/(1.73 x 10⁻⁷m) = 1.15 x 10⁻¹⁸j/e⁻ x 6.023 x 10²³ e⁻/mole = 691,999 j/mole e⁻ = 692 Kj/mole e⁻ x 6.24 x 10²¹ eV/KJ = 4.32 x 10²⁴ eV/mole e⁻

You might be interested in
Which ligand binds tightest? ligand A, with a dissociation constant ( Kd ) of 10−9 M ligand D, with a percent occupancy of 80% a
Delvig [45]

Answer:

The answer will be Ligand A with a dissociation constant (Kd) of 10^{-9}M

Explanation:

When the dissociation constant in the ligand is small (in order of nano) ( 10^{-9}) it will be more tied. Due to a dissociation constant measures how much a ligand can be able to be separated from the protein so if the number is small it means that the ligand is highly binded to the protein.

On the other hand, the occupancy percentage of the ligand does not imply binding. Conversely, a High-affinity ligand binding with the proteins implies that a relatively low concentration of a ligand is adequate to occupy the maximum ligand-binding site.

6 0
3 years ago
Find the celcius equivalent of 133 degrees Kelvin
egoroff_w [7]

Answer:

<h2>406 K</h2>

Explanation:

To convert a temperature from degree Celsius to Kelvin add 273 to the value in degree Celsius

That's

K = 273 + °C

where

K is the temperature in Kelvin

°C is the temperature in degree Celsius

From the question we have

K = 273 + 133

We have the final answer as

<h3>406 K</h3>

Hope this helps you

5 0
3 years ago
Read 2 more answers
When a person has excess stomach acid, he or she may ingest some sodium bicarbonate. The rationale for doing this is that the so
murzikaleks [220]
A base will neutralize the excess acid
4 0
3 years ago
Read 2 more answers
Which polymer is a biopolymer?
kodGreya [7K]
Polylactic acid is the correct answer
6 0
3 years ago
Read 2 more answers
What is the mass of a 4.259 g/cm3 substance which takes up 250.00 cm3 of space? answer in significan figures
marysya [2.9K]

Answer: that is wrong

Explanation:

4 0
4 years ago
Other questions:
  • Draw the structure for cis-2,3-dibromo-2-hexene.
    13·2 answers
  • Which of the following reactions is endothermic?
    8·2 answers
  • Homogeneous mixture that does not settle out upon standing reflect light is an element. solid. hydrated.
    15·1 answer
  • Classify the following as an element, compound, homogeneous mixture, or heterogeneous mixture:
    5·1 answer
  • In each equation, label the acids, bases, and conjugate acid-base pairs. (Type your answer using the format [NO3]- for NO3-.)
    12·1 answer
  • If a horse gallops 1 meter per second, how far can it travel in 1 minute? <br><br> pls help
    5·1 answer
  • During an experiment, distilled water was placed in a sealed container and the container was heated gradually. Describe this sys
    11·1 answer
  • H2(g)+I2(s)→HI(s)H2(g)+I2(s)→HI(s) balance equations
    7·1 answer
  • Help with chemistry
    15·1 answer
  • Which statement about the diagram, if electrons flow from
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!