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
Harlamova29_29 [7]
3 years ago
14

What is the approximate energy of a photon having a frequency of 4 x 10^7 Hz? (h = 6.6 x 10^-34 J . s)

Chemistry
1 answer:
BigorU [14]3 years ago
3 0

Answer:

2.64 ×10^{-26} J

Explanation:

I think you should mark it a physics question instead but anyway.

---------------------------------------------------------------------------

The Planck equation should be applied:

E = hv , while E is energy of proton; h is Planck constant; and v is frequency.

E = 6.6 × 10^{-34} × 4 × 10^{7}

  = 6.6 × 4 × 10^{-27}

  = 2.64 ×10^{-26} J

You might be interested in
5g of aspirin will powder will take effect more quickly than a 5g aspirin tablet because the powder has more what
Pani-rosa [81]

Answer:

Explanation:

Because the powder has more finer and larger surface area hence it absorbed faster and it becomes more effective in performance compared to the tablet that will still need to be dissolved before it is been assimilated into the body system.

7 0
3 years ago
You estimate that you sent 135 texts last week but when you get the bill, it was actually 175. Calculate the percent error
FinnZ [79.3K]

Answer: -40

Explanation: Percent error is calculated by subtracting the value you actually recieved from the literature value (175 in your case)  SO your answer should be 135-175=-40.

6 0
3 years ago
Which acid has the largest ka: hclo3(aq), hbro3(aq) or hio3(aq)?
ryzh [129]
Greater the Ka value greater is the acid strength. Among these three acids HClO3 is the strongest acid, with greatest Ka and lowest pKa value (-1), Then comes HBrO3, its the second most strongest acid among the three, its Pka value is 0.7, higher than HClO3 but smaller than HIO3 (i.e. 0.77) which the weakest acid among the three.

3 0
3 years ago
50. The Sun's energy and composition is provided by which of the following?
PIT_PIT [208]

Answer:

A. the burning of fossil fuels within the Sun

Explanation:

3 0
2 years ago
Using standard free energy of formation values given in the introduction, calculate the equilibrium constant kp of the reaction
WINSTONCH [101]

d G = 2 (dG NOCl) - 2 (dG NO)

= 2 * 66.08 - 2 * 87.6 = -43.04 kJ /mol

dG = - 2.303 RT log K

-43.04 = - 2.303 RT log K

7.54 = log K

K = 3.42 * 10^7

Kp = k (RT)^dn

d n = 2 - 1 -2 = -1

Kp = (3.42 * 10^7) (8.314 * 298)^-1

Kp = 1.31 * 10^4

6 0
3 years ago
Other questions:
  • When burned, coal releases _____. oxygen carbon dioxide methane sulfur nitrogen oxide?
    15·1 answer
  • Which chemical equation represents the reaction of an Arrhenius acid and an Arrhenius base?
    11·2 answers
  • On a temperature versus time graph, how does the temperature at the beginning of a change of state compare with the temperature
    6·2 answers
  • Why is gunshot residue important for a forensic scientist? What are the potential complications with this type of evidence?
    7·1 answer
  • No pain no gain . which figure of speech is this​
    12·2 answers
  • This graph represents a population of molecules in a gas versus the distribution of the average velocity(speed) of its molecules
    6·1 answer
  • What is the average speed of a skateboarder who travels 20 km in 2 hours
    6·1 answer
  • Julie went on a picnic. During the picnic, Julie saw ants climb up the picnic table, pick up crumbs, and carry them away.
    5·1 answer
  • Name the products of the enzymatic hydrolysis of sucrose and the enzyme involved.
    5·1 answer
  • The number of valence electrons <br> from the left to right across a period.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!