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
Klio2033 [76]
2 years ago
15

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.32 × 1014 Hz.

Chemistry
1 answer:
tester [92]2 years ago
7 0

Answer:

474 nm or 4.74 x 10^2 nm

Explanation:

c = λv

c (speed of light) = 2.998 x 10^8 m/s

λ = ?

v = 6.32 × 1014 Hz = 6.32 × 1014 1/s

2.998 x 10^8 m/s = (λ)(6.32 × 10^14 1/s)

λ = (2.998 x 10^8 m/s) / (6.32 × 10^14 1/s)

λ = 4.74 x 10^-7 m

λ = 4.74 x 10^-7 m x (1 x 10^9 nm/1 m) = 474 nm

You might be interested in
Explain some of the benefits and problem associated with the pesticide DDT.
Dafna1 [17]

Some benefits are that DDT helps us grow crops and keeps pests off our crops.

But DDT is harmful to the environment. If it gets into the water ways then if can harm fish and animals that eat the fish such as birds.

4 0
2 years ago
What is the total number of moles represented by 20 grams of CACO3
Nutka1998 [239]

Answer:

B. 0.2.

Explanation:

  • We can use the relation:

<em>n = mass/molar mass</em>

mass of CaCO₃ = 20 g, molar mass of CaCO₃ = 100.0869 g/mol.

<em>∴ n = mass/molar mass = </em>(20 g)/(100.0869 g/mol) <em>= 0.1998 ≅ 0.2 mol.</em>

<em></em>

<em>So, the right choice is: B. 0.2.</em>

8 0
3 years ago
Explain the reason potassium was visible when using the cobalt glass. Describe what occured.
Korolek [52]

Explanation:

If potassium is burnt the ions go into a high state of energy. Once they cool, it gives off energy in the form of a visible spectrum which has a characteristic color Now, The cobalt glass blocks out yellow light, and potassium ion which is purple in color is visible.

3 0
3 years ago
Measure of the average kinetic energy of molecules in an in an object
algol13
Yes because molecules is solid
8 0
2 years ago
Why is there not a constant molar volume for solids and
iragen [17]

Answer:

all of the above

Explanation:

i got the answer right on cK-12

7 0
2 years ago
Other questions:
  • A patient needs to take her cholesterol medication every morning and night. Her prescription bottle most likely says
    12·1 answer
  • Electrical conductivity is an example of what property
    15·2 answers
  • The reactants of photosynthesis are
    6·1 answer
  • MgO + H2O = Mg(OH)2 is an example of a _____ chemical reaction.
    6·1 answer
  • Compared to the charge of a proton, the charge of an electron has?
    8·1 answer
  • A tank can hold up to 2500 liters of liquid. The tank initially contains 1000 liters of a brine solution with 50kg of salt. A br
    10·1 answer
  • How many joules it take to melt 35g of ice at 0
    15·2 answers
  • Please help! It would be amazing if you can!!
    8·1 answer
  • Which characteristic of the elements increases as you move across a period from left to right?
    7·1 answer
  • True or False Liquids can be easily poured because liquid molecules can roll or slide over each other.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!