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
I am Lyosha [343]
2 years ago
13

If the wavelength of purple light is 400 x 10^-9 m, what is the frequency?

Chemistry
1 answer:
FromTheMoon [43]2 years ago
3 0

The frequency : a) 7.5 x 10¹⁴ /s

<h3>Further explanation</h3>

Radiation energy is absorbed by photons

The energy in one photon can be formulated as

\large{\boxed{\bold{E\:=\:h\:.\:f}}}

Where

h = Planck's constant (6,626.10⁻³⁴ Js)

f = Frequency of electromagnetic waves  (/s or Hz)

f = c / λ

c = speed of light

= 3.10⁸  m/s

λ = wavelength

The wavelength(λ) of purple light is 400 x 10⁻⁹ m, so the frequency :

\tt f=\dfrac{c}{\lambda}\\\\f=\dfrac{3.10^8~m/s}{4.10^{-7}m}\\\\f=\boxed{\bold{7.5.10^{14}}/s}

You might be interested in
Why was it important to establish the Clean Air Act?
deff fn [24]

Answer:

C.

Explanation:

The Clean Air Act was enacted in 1973 and brought to action in 1990. The act was passed to supervise air emissions to ensure clean air and atmosphere for people. The act was passed in the wake of premature deaths of hundred of thousands people. The act works with NAAQS to ensure safe and clean air for the safety of public health.

<u>From the given options the correct one is C. The Clean Air Act supervises the activities which emits air and any activities that is found to pollute the air will be labelled as illegal</u>.

Therefore, option C is correct.

5 0
2 years ago
How many moles are in 30g of C12H22O11?
Nastasia [14]

Answer:

342.29648 grams

Explanation:

Good luck

3 0
3 years ago
Read 2 more answers
How does adding an atom affect the position of existing atoms or lone pairs?
Paha777 [63]

Adding an atom will increase the repulsion between existing atoms and lone pairs. Added atom will result in bond pair-bond pair and bond pair-lone pair repulsion. The magnitude of the lone pair-bond pair repulsion is greater than the bond pair-bond pair repulsion. The added atom will change the electron geometry and bring about a distortion in the molecular geometry.

8 0
3 years ago
Read 2 more answers
Can you help me understand this question
snow_tiger [21]
You should talk about how it evaporates then it turn into a gas then back in to a liquid
6 0
3 years ago
How many molecules are in 12.5g of water (H2O)?
Katyanochek1 [597]

Answer:

.694 moles

Explanation: do given over one so 12.5 over 1 then multiply that by 1 over 18.01528( atomic mass of water) and then you get ans answear that you sig fig but i did that for you

7 0
3 years ago
Other questions:
  • Given the equation representing a system at equilibrium in a sealed, rigid container:
    14·2 answers
  • A compound of low solubility
    10·1 answer
  • A container with a volume of 3.46 liters contains a gas at a pressure of 1.30 atmospheres and a temperature of 274.27 Kelvins. H
    6·2 answers
  • Which of these will reflect light with the highest frequency?
    8·1 answer
  • I would like to know the meaning of the electrostatics? if someone knew please tell me
    12·1 answer
  • I will give you 50 pts
    5·2 answers
  • Next
    6·1 answer
  • PLEASE HELP!<br><br> See picture
    6·1 answer
  • What is the coefficient of the H2O in the balanced chemical
    14·1 answer
  • Who was the first person to show strong empirical evidence for the existence of atoms?.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!