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
What is the difference between a carnivore and a herbivore?? ​
agasfer [191]

meat-eating carnivores have teeth for tearing and skulls capable of biting with great force, while the plant-eating herbivores have teeth and skulls equipped to grind tough vegetation

6 0
3 years ago
Read 2 more answers
What type of central-atom orbital hybridization corresponds to each electron-group arrangement:
galina1969 [7]

Tetrahedral arrangement is resulted upon mixing one s and three p atomic orbitals, resulting in 4 hybridized sp^3 orbitals → sp^3 hybridization.

<h3>What is orbital hybridization?</h3>

In the context of valence bond theory, orbital hybridization (or hybridisation) refers to the idea of combining atomic orbitals to create new hybrid orbitals (with energies, forms, etc., distinct from the component atomic orbitals) suited for the pairing of electrons to form chemical bonds.

For instance, the valence-shell s orbital joins with three valence-shell p orbitals to generate four equivalent sp3 mixes that are arranged in a tetrahedral configuration around the carbon atom to connect to four distinct atoms.

Hybrid orbitals are symmetrically arranged in space and are helpful in the explanation of molecular geometry and atomic bonding characteristics. Usually, atomic orbitals with similar energies are combined to form hybrid orbitals.

Learn more about Hybridization

brainly.com/question/22765530

#SPJ4

3 0
1 year ago
How many grams of nh3 can be produced from 2.86 mol of n2 and excess h2?
IRISSAK [1]
I think <span>3H2+N2==>2NH3</span>
7 0
3 years ago
12.00 moles of naclo3 will produce how many grams of O2? (Moles to Grams)
Sergeu [11.5K]
2NaClO₃   →  2NaCl  +  3O₂

mole ratio of NaClO₃  to  O₂  is  2  :  3

∴  if moles of NaClO₃  =  12 mol

then moles of O₂  =  \frac{12 mol   *   3}{2}
      
                             =  18 mol


Mass of O₂  =  mol of O₂  ×  molar mass of O₂
 
                    =  18 mol  × 16 g/mol
 
                    =  288 g

So I wasn't sure which equation to use since you did not specify so I just used the decomposition reaction.  If you should have used another reaction then just follow the same steps and you'll get your answer.




4 0
3 years ago
An empty vial weighs 55.32 g. (a) If the vial weighs 185.56 g when filled with liquid mercury (d = 13.53 g/cm3). What i its volu
Tasya [4]

Answer:

a) Volume of vial= 9.626cm3

b) Mass of vial with water = 62.92 g

Explanation:

a) Mass of empty vial = 55.32 g

Mass of Vial + Hg = 185.56 g

Therefore,

mass\ of\ Hg = 185.56-55.32 = 130.24 g

Density of Hg = 13.53 g/cm3

Volume\ of\ vial = Volume\ of\ Hg = \frac{Mass}{Density} \\\\= \frac{130.24g}{13.53g/cm3} = 9.626 cm3

b) Volume of water = volume of vial = 9.626 cm3

Density of water = 0.997 g/cm3

Mass\ of\ water = Density*volume = 0.997g/cm3*9.626cm3=9.60 g\\\\Total\ Mass\ of\ vial = Empty\ vial + mass\ of\ water\\= 53.32+9.60= 62.92g

3 0
3 years ago
Other questions:
  • What is the average speed vavg of the molecules in the gas? express your answer numerically to three significant digits?
    6·1 answer
  • Natalie observes these characteristics in the model of an atom.
    15·1 answer
  • HELP PLEASE HELP ME!
    10·1 answer
  • What is the formula for calculating the energy of a photon?
    11·1 answer
  • Combustion of hydrocarbons such as butane () produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosp
    9·1 answer
  • Molecular iodine,
    7·1 answer
  • 5. How are the members of Kingdom Archaebacteria different from the
    6·1 answer
  • How many atoms in:
    13·1 answer
  • I smell onions.
    9·2 answers
  • Which substance cannot be decomposed by a chemical change?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!