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
LenaWriter [7]
2 years ago
5

An FM radio transmitter broadcasts at 98.4 MHz with a power of

Chemistry
1 answer:
Mariana [72]2 years ago
3 0

Answer:

6.9 × 10²⁹ photons

Explanation:

Given:

Frequency, υ = 98.4 MHz  = 98.4 × 10⁶ Hz

Power, P = 45 kW = 45000 J/sec

Now,

The total energy in time, t = 1 second

E = P × t  = 45000 J/sec × 1 s

or

Energy = 45000 J

also,

Energy of photons = hυ

Where, h is the Plank's constant

or

Energy of photons = 6.625 × 10⁻³⁴ × 98.4 × 10⁶

or

Energy of photons  = 6.519 × 10⁻²⁶ J

Now,

number of photons = \frac{\textup{Total Energy}}{\textup{Energy of Photon}}

or

n = \frac{45000}{6.519\times10^{-26}}

or

n = 6.9 × 10²⁹ photons

You might be interested in
Which states of matter change shape when moved? Which states of matter change shape when moved?
lions [1.4K]

Answer:

Gas and Liquids

Explanation:

6 0
2 years ago
DNA is the genetic material that provides instructions for all cell processes. Where is the DNA located in prokaryotes?
Semmy [17]

Answer:

I think its B HOPE THIS HELPS!!!!!!

7 0
3 years ago
Read 2 more answers
What four factors influence the rate of a homogeneous reaction.
Anika [276]
1) concentration or partial pressure of species
involved. 2) temperature • 3) presence of catalyst
4) nature of reactants.
5 0
2 years ago
A beaker contains a 25 ml solution of an unknown monoprotic acid that reacts in a 1:1 stoichiometric ratio with naoh. titrate th
yuradex [85]

<u>Given:</u>

Volume of the unknown monoprotic acid (HA) = 25 ml

<u>To determine: </u>

The concentration of the acid HA

<u>Explanation:</u>

The titration reaction can be represented as-

HA + NaOH → Na⁺A⁻ + H₂O

As per stoichiometry: 1 mole of HA reacts with 1 mole of NaOH

At equivalence point-

moles of HA = moles of NaOH

For a known concentration and volume of added NaOH we have:

moles of NaOH = M(NaOH) * V(NaOH)

Thus, the concentration of the unknown 25 ml (0.025 L) of HA would be-

Molarity of HA = moles of HA/Vol of HA

Molarity of HA = M(NaOH)*V(NaOH)/0.025 L


5 0
3 years ago
28. What is a surfactant? Explain how it works.
lidiya [134]

\mathbb\color{orange}{\tiny A\scriptsize N\small S\large W\Large E\huge R}

  • surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties.
  • In the dyeing of textiles, surfactants help the dye penetrate the fabric evenly.
  • They are used to disperse aqueous suspensions of insoluble dyes and perfumes.
7 0
2 years ago
Other questions:
  • Which description is not a property of an acid?
    13·2 answers
  • What is the coded properties of liquid solid and gas​
    11·1 answer
  • Which statement describes the use of a flowchart?
    9·2 answers
  • Does The nucleus of an atom contain all of the protons in the atom
    11·1 answer
  • An element’s atomic number is the?
    6·2 answers
  • 100 points! Report on an element
    10·2 answers
  • The pH of a saturated solution of a metal hydroxide MOH is 10.15. Calculate the Ksp for this compound.
    11·1 answer
  • Sentences bilang repeated addition. Isulat ang iyong sagot sa
    8·1 answer
  • Need help I don’t understand this at all need to show my work and strategy it’s stoichiometry gram to gram please help
    10·1 answer
  • Why did plants perform cellular respiration?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!