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
MrRissso [65]
3 years ago
12

Line spectra from all regions of the electromagnetic spectrum, including the Paschen series of infrared lines for hydrogen, are

used by astronomers to identify elements present in the atmospheres of stars. Calculate the wavelength of the photon emitted when the hydrogen atom undergoes a transition from n = 5 to n = 3. (R = 2.179 x 10-18 J R = 1.096776 x 10^7 m-1) A. 205.1 nm B. 384.6 nm C. 683.8 nm D. 1282 nm E. > 1500 nm
Chemistry
1 answer:
Nastasia [14]3 years ago
7 0

Answer:

The correct answer is option D.

Explanation:

Using Rydberg's Equation for hydrogen atom:

\bar{\nu}=\frac{1}{\lambda}=R_H\left(\frac{1}{n_i^2}-\frac{1}{n_f^2} \right )

Where,

\bar{\nu} = Wave number

\lambda = Wavelength of radiation

R_H = Rydberg's Constant

n_f = Higher energy level

n_i= Lower energy level

We have:

n_f=5, n_i=3

R_H=1.096776\times 10^7 m^{-1}

\frac{1}{\lambda}=1.096776\times 10^7 m^{-1}\times \left(\frac{1}{3^2}-\frac{1}{5^2} \right )

\frac{1}{\lambda}=1.096776\times 10^7 m^{-1}\times \frac{16}{225}

\lambda =1.2822\times 10^{-6} m=1282.2 nm\approx 1282 nm

(1 m= 10^9 nm)

The wavelength of the photon emitted when the hydrogen atom undergoes a transition from n = 5 to n = 3 is 1282 nm.

You might be interested in
The atoms in a copper bar are held together by metallic bonding. What would happen you ran over a copper bar with a car? It woul
ludmilkaskok [199]

The answer is D.

<em>Hope this helps!</em>

4 0
3 years ago
Read 2 more answers
How is oxygen and nitrogen alike​
11111nata11111 [884]

Answer:

They are both colorless, odorless, and tasteless. They have the same number of valence electrons too. And unbalanced electrons in their valence shell.

Explanation:

3 0
3 years ago
Read 2 more answers
Describe how a baseball player accelerates as he runs around the bases after hitting home run
Wewaii [24]
<span>he accelerates when he runs  away from home plate.  as he reaches each base, the player accelerates by changing direction. he accelerates again when slowing down after reaching home plate.</span>
4 0
3 years ago
Plz help i’m stuckkkk
scZoUnD [109]

Answer:

first

Explanation:

Assets = Equity + Liability. ...

Assets = Liabilities + Shareholder's Equity.

then ans will be in your feet it's east

3 0
3 years ago
Question 2: Heat (5 points)
Ronch [10]

Answer:

(i) specific heat

(ii) latent heat of vaporization

(iii) latent heat of fusion

Explanation:

i. Q = mcΔT; identify c.

Here, Q is heat, m is the mass, c is the specific heat and ΔT is the change in temperature.

The amount of heat required to raise the temperature of substance of mass 1 kg by 1 degree C is known as the specific heat.  

ii. Q = mLvapor; identify Lvapor

Here, Q is the heat, m is the mass and L is the latent heat of vaporization.

The amount of heat required to convert the 1 kg liquid into 1 kg vapor at constant temperature.  

iii. Q = mLfusion; identify Lfusion

Here, Q is the heat, m is the mass and L is the latent heat of fusion.  

Here, Q is the heat, m is the mass and L is the latent heat of vaporization.

The amount of heat required to convert the 1 kg solid  into 1 kg liquid at constant temperature.  

8 0
3 years ago
Other questions:
  • 6. Which compound is a saturated hydrocarbon?
    14·1 answer
  • What are the benefits and drawbacks of international cooperation in space exploration?
    8·1 answer
  • A 600g boulder has a density of 8g/cm3. What is the volume of the boulder?
    10·1 answer
  • What is the density of mass=108g volume=5.64cm3
    11·1 answer
  • Given the following equation:
    11·1 answer
  • that equal volumes of gas under the same conditions have equal numbers of molecules. This concept is a very important one, as it
    14·2 answers
  • Which compound reacts with a base in the bicarbonate buffer system in the human body? Carbon dioxide carbonic acid bicarbonate i
    7·2 answers
  • In Rutherford's golf foil experiment, no a particles stuck to the atom. If a particles had stuck to the atom, what might you hav
    5·1 answer
  • 2) explain why Ce(iii) with a 4f1 configuration is colourless and Ce(iv) with 4f0 configuration is red?​
    8·1 answer
  • 12. An electrolysis reaction is
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!