answer.
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
Fudgin [204]
2 years ago
9

What is the total E associated with one mole of photons (a unit known as the Einstein) of 3.91x1019 Hz?

Chemistry
1 answer:
sashaice [31]2 years ago
8 0

Answer:

        E=1.56\times 10^{10}J

Explanation:

The<em> energy of a photon</em>, E, can be calculated with the Planck-Einstein equation:

          E=hf

Where:

  • h is Planck's constant 6.626×10⁻³⁴ J.s, and
  • f is the frequency of the photon or electromagnetic radiation.

Substituting with your data:

          E=6.626\times 10^{-34}J.s\times 3.91\times 10^{19}s^{-1}=2.5908\times 10^{-14}J

Now multiply by Avogadro's number to obtain the energy of one mole of photons:

          E=2.5908\times 10^{-14}J\times 6.022\times 10^{23}=1.56\times 10^{10}J

You might be interested in
What is the mass of nickel(ii) nitrate (182.71 g/mol) dissolved in 25.0 ml of 0.100 m ni(no3)2 solution?
Studentka2010 [4]
The mass  of  ni(NO3)2  that  dissolved  in  25.0 ml  of 0.100m  ni(NO3)2  solution  is  calculated  as   follows

fin  the  number  of  moles   =  molarity   x  volume in  liters

=25  x0.100/ 1000= 2.5  x10^-3  moles
mass  =  mass  x  molar  mass
= 2.5  x10^-3 moles x  182.71 g/mol  = 0.457  grams
4 0
2 years ago
Read 2 more answers
Sierra has a special kind of liquid rubber. She knows that ultraviolet light is absorbed by the rubber, X-ray light is transmitt
Grace [21]
Send a picture of the question
3 0
2 years ago
On a cool morning, Uyen’s breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen se
marissa [1.9K]

The correct option is: VAPORIZATION AND CONDENSATION.

Matters have the ability to change from one state to another state, this is called state transition. In the question given above, the carbon dioxide, which Uyen's was breathing out came in form of vapors and forms a cloud by condensing. Condensation is the process by which water droplets are formed when a vapor from comes in contact with cold surfaces. In the question given above, the vaporized gas condenses when it comes in contact with the humid air.


5 0
2 years ago
Read 2 more answers
A sample weighing 30.0 grams contains 1.5g of salt/ determine the percent salt found in the sample
jeka57 [31]
<span>Percentage by mass is the amount in mass of a component in a mixture per 100 unit of mass of the total mixture. Percentage by mass is the same as  %w/w. We can determine this by dividing the mass of the solute with the total mass of the mixture. We calculate as follows:

Percent salt = 1.5 g salt / 30.0 g x 100 = 5%  </span>
7 0
2 years ago
an alloy contains 56g of pure silver and 22g of pure copper what is the percentage(%) of silver in the alloy?
Lerok [7]
To get the ans divide 5600by 78 and there is ur answer
6 0
2 years ago
Read 2 more answers
Other questions:
  • An online wave simulator created these four waves. Which wave has the lowest frequency?
    10·2 answers
  • In looking at the bolded atoms in the answer choices, which pair consists of molecules having the same geometry? view available
    15·1 answer
  • Which statement about the spectrophotometric analysis of Red 40 dye is TRUE?
    8·1 answer
  • Two different ionic compounds each contain only copper and chlorine. Both compounds are powders, one white and one brown. An ele
    6·1 answer
  • What is the ph of the solution prepared by dissolving 0.927 mol hcl in enough water to make a 150 l aqueous solution?
    11·1 answer
  • A 1000.0 ml sample of lake water in titrated using 0.100 ml of a 0.100 M base solution. What is the molarity (M) of the acid in
    13·1 answer
  • The graph above shows the changes in temperature recorded for the 2.00 l of h2o surrounding a constant-volume container in which
    9·1 answer
  • 1. Carson completed conductivity testing on the solutions shown in the data table below and recorded his findings in the conduct
    6·1 answer
  • b) Write a few paragraphs describing the chemical reaction and explaining the energy change in the reaction. Your document shoul
    8·2 answers
  • What is produced on the top of a pool of water by the mutual attraction between water molecules?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!