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
Sergio [31]
2 years ago
6

What is the frequency of a photon that has an energy of 7.2 × 10^-16 J ?

Chemistry
1 answer:
leonid [27]2 years ago
3 0

Answer:

none of the above options

Explanation:

E = hf

E = 7.2 X 10^-16j

h = Planck constant = 6.6 X 10^-34

f = E/h

f = 7.2 X 10^-16/6.6 X 10^-34

f = 1.09 X 10^-50s-¹

You might be interested in
Iron and carbon monoxide are made by heating 5.53 kg of iron ore, Fe₂O₃, and carbon. What is the theoretical yield of iron in ki
vfiekz [6]

Answer:

Mass of Fe produced = 3.86785211069  ≈ 3.87 kg

Explanation:

From the question the chemical reaction can be written as follow :

Fe2O3 + C → Fe + CO  

Balance the equation

Fe2O3 + 3C → 2Fe + 3CO  

compute the molecular mass of Fe2O3 and atomic mass of Iron(Fe)

Molecular mass of Fe2O3 = 55.845(2) + 15.999(3) = 111.69 + 47.997 = 159.687 g

Atomic mass of iron = 55.845 g

From the balanced equation

159.687 g of Fe2O3  produces 2 ×  55.845 = 111.69 g of Fe(iron)

Convert the 5.53 kg to gram

1 kg = 1000 g

5.53 kg  = 5.53 × 1000 = 5530 g

since,

159.687 g of Fe2O3  produces 2 ×  55.845 = 111.69 g of Iron(Fe)

5530 g of  Fe2O3  will produce  

cross multiply

Mass of Fe produced =5530 × 111.69/159.687

Mass of Fe produced = 617645.7

/159.687

Mass of Fe produced = 3867.85211069  g

convert to kg

1000 g = 1 kg

3867.85211069   = 3867.85211069/1000

Mass of Fe produced = 3.86785211069  ≈ 3.87 kg

3 0
3 years ago
Inside an atom, which of these occupies the maximum volume? a) the electrons b) the protons c) the neutrons d) empty space (vacu
icang [17]

Answer: Electrons

Explanation:The electron itself is small but it takes space as much as an atom by circling around the nucleus.

3 0
2 years ago
How is Carbon returned to the atmosphere<br><br>Please help image below​
Harrizon [31]

Answer:

Carbon is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms.Humans play a major role in the carbon cycle through activities such as the burning of fossil fuels or land development.

8 0
2 years ago
Read 2 more answers
Help brainliest plzzzz
konstantin123 [22]
The awnser is D or the 4th one
6 0
3 years ago
Read 2 more answers
What is the correct formula
nataly862011 [7]

Answer:

A the answer is A I'm sure

7 0
3 years ago
Other questions:
  • What is the 10% rule? What is its significance? Why is energy lost?
    7·1 answer
  • A piece of gold wire has a diameter of .175cm. How much will precisely 1.00 x 10^5 cm of the wire weigh
    13·1 answer
  • Teeth, tongue, throat, stomach, small intestines, large intestines, and rectum are all part of ___________ system during the sys
    5·2 answers
  • What’s the percent composition of each element in strontium carbonate.
    14·2 answers
  • What is the pH of H3O+ = 2.4(10^-3) M? <br><br> A.) 3<br> B.) 2.6<br> C.) 5.4<br> D.) -3
    9·1 answer
  • The cell of your body need energy to carry out life function. Which of the following body responses is a sign that your cells ne
    7·1 answer
  • PLEASEE HELP ME! PLS PLS I NEED IT NOW PLS!
    5·1 answer
  • What does malluable mean
    13·1 answer
  • Why do planets rotate around our sun
    10·1 answer
  • There is a third bromobutene structure that could have been formed in the addition of HBr to butadiene: cis-1-bromor-2-butene (t
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!