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
const2013 [10]
3 years ago
7

Violet light has a frequency of 7.26 * 1014 Hz and travels at a speed of 3.00 * 108 m/s.

Chemistry
2 answers:
Mars2501 [29]3 years ago
6 0

Answer : The wavelength of violet light is, 413 nm

Explanation :

Formula used :

\nu=\frac{c}{\lambda}

where,

\nu = frequency of violet light = 7.26\times 10^{14}Hz=7.26\times 10^{14}s^{-1}

As we know that, Hz=s^{-1}

\lambda = wavelength of violet light

c = speed of light = 3.00\times 10^8m/s

Now put all the given values in the above formula, we get:

7.26\times 10^{14}s^{-1}=\frac{3.00\times 10^8m/s}{\lambda}

\lambda=\frac{3.00\times 10^8m/s}{7.26\times 10^{14}s^{-1}}

\lambda=4.13\times 10^{-7}m=4.13\times 10^{-7}\times 10^9nm=413nm

conversion used : 1m=10^9nm

Therefore, the wavelength of violet light is, 413 nm

Romashka [77]3 years ago
5 0

c=λν

3*10^8 m/s * 10^9 nm/m / 7.26*10^14 s^-1= λ

=413.22 nm

λ=413 nm

You might be interested in
Which formula correctly represents the composition of iron III oxide
nikitadnepr [17]
The answer to the question is- Fe2O3
6 0
2 years ago
An electron is a particle with a _____.
astra-53 [7]
The Answer is B.

*NEGATIVE CHARGE, FOUND OUTSIDE THE NUCLEUS*
5 0
2 years ago
Read 2 more answers
g A solution contains 100mM NaCl, 20mM CaCl2, and 20mM urea. We would say this solution is __________ compared to a 300 mOsM sol
ICE Princess25 [194]

Answer:

A solution contains 100mM NaCl, 20mM CaCl2, and 20mM urea. We would say this solution is hypotonic compared to a 300 mOsM solution and hypotonic compared to a cell with 300 mOsM (non-penetrating solutes) interior.

Explanation:

The osmolarity is calculated from the molar concentration of the active particles in the solution. We have a solution that is composed of NaCl, CaCl₂ and urea.

When they are dissolved in water, they dissociate into particles as follows:

NaCl → Na⁺ + Cl⁻  (2 particles per compound)

CaCl₂ → Ca²⁺ + 2 Cl⁻ (3 particles per compound)

urea: not dissociation (1 particle per compound)

Then, we have to calculate the osmolarity of the solution. We multiply the molarity of each compound by the number of particles produced by the compound in water:

Osm = (100 mM NaCl x 2) + (20 mM CaCl₂ x 3) + (20 mM urea x 1) = 280 mOsm

Compared with 300 mOsm, 280 mOsm has a lower osmolarity, so it is a hypotonic solution.

To compare with a cell's osmolarity, we have to consider only the non-penetrating solutes. Urea is considered a penetrating solute for mammalian cells. So, the osmolarity of non-penetrating solutes (NaCl  and CaCl₂) is calculated as:

Osm (non-penetrating solutes) = (100 mM NaCl x 2) + (20 mM CaCl₂ x 3) = 260 mOsm

Therefore, we have:

Compared to 300 mOsm solution ⇒ 280 mOsm solution is a hypotonic solution

Compared to a cell with 300 mOsm ⇒ 260 mOsm solution is hypotonic

4 0
2 years ago
Arrange the molecules H2O, NH3, Ar, NaCl in order of expected increasing boiling points. 1. None of these 2. NaCl, H2O, NH3, Ar
Aleks04 [339]

Answer:

Option (4) is correct

Explanation:

  • NaCl is an ionic solid. Na^{+} and Cl^{-} ions are held together by strong coloumbic attractive force. Hence NaCl has highest boiling point'
  • Ar is a monoatomic molecule. Hence only weak london dispersion force exists between Ar atom/molecules. Hence it requires lowest amount of energy to boil and thereby possess lowest boiling point.
  • NH_{3} and H_{2}O are polar protic molecules. Hence they possess london dispersion force, dipole-dipole force and hydrogen bonding as intermolecular forces.
  • Dipole-dipole force is stronger in H_{2}O than NH_{3} due to more polar O-H bond than N-H bond. Also molecular weight of H_{2}O is higher than NH_{3}. So, more energy is required to boil H_{2}O. So, H_{2}O has higher boiling point than NH_{3}

Hence order of boiling point : NaCl>H_{2}O>NH_{3}>Ar

4 0
3 years ago
When the ground becomes saturated in a rain storm and the excess cannot be soaked up, the water will travel along the ground unt
dalvyx [7]

The answer is surface water

8 0
3 years ago
Read 2 more answers
Other questions:
  • A compound contains 6.0 g of carbon and 1.0 g of hydrogen and has a molar mass of 42.0 g/mol.
    15·1 answer
  • Why do waves move faster at higher temperatures and in a solid phase?
    7·2 answers
  • If a climate scientist says, "The CO2 concentration in 2018 was 407.4 ppm." What<br> do they mean? *
    13·1 answer
  • Slicing an average loaf of bread gives 13 medium thickness slices. Each slice of bread is to be coated with 0.0500 oz of mayonna
    15·1 answer
  • Why copper should not be disposed of in landfill sites?
    14·2 answers
  • How did Bohr refine the model of the atom? How did Bohr refine the model of the atom? He developed electrochemistry. He discover
    8·1 answer
  • What is the scientific tool required to measure the volume of a liquid?
    13·1 answer
  • A sample of gas occupies 7.80 liters at 425°C? What will be the volume of the gas at 35°C if the pressure does not change?
    12·1 answer
  • Please help with this question
    6·2 answers
  • Why is petrified wood considered a fossil?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!