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
andreyandreev [35.5K]
3 years ago
14

Use the Rydberg equation to calculate the wavelength (in Å) of the photon absorbed when a hydrogen atom undergoes a transition f

rom n = 1 to n = 3.
Chemistry
1 answer:
ivolga24 [154]3 years ago
7 0

Answer:

1024Å

Explanation:

The Rydberg equation is an empirical relationship equation expressed by Balmer and Rydberg which is given as:

1/λ = R_{H} (\frac{1}{n_{f} ^{2} }-\frac{1}{n_{i} ^{2} }  ).............................(1)

where R_{H} is the Rydberg constant given as 1.09 x 10^{7}m^{-1}, n is the transition level and the subscript f and i show the final and initial level numbers respectively. λ is the wavelength.

n_{f}= 1

n_{i} = 3

Using equation (1), we have

1/λ = 1.097 x 10^{7}(\frac{1}{3^{2} }- \frac{1}{1^{2} })

    = 1.097 x 10^{7} (\frac{1}{9} -\frac{1}{1} )

      = 1.097 x 10^{7}(0.11-1)

       = 1.097 x 10^{7} (-0.89)

       = - 9763300

λ = -\frac{1}{9763300}

   = -1.024x 10^{-7}m

We should note that the negative sign we have is as a result of photon absorption whereby the hydrogen atom gains energy to undergo a transition from the lower energy level to a higher one. Wavelength does not have a negative value.

To convert to Å, we have

λ = \frac{1.024 x 10^{-7} }{10^{-10} } = 1024Å  

Therefore the wavelength of the photon in Å  is 1024Å

You might be interested in
How many milliliters of ammonium sulfate solution having a concentration of 0.218 M are needed to react completely with 62.6 ml
BartSMP [9]

Answer:

330 mL of (NH₄)₂SO₄ are needed

Explanation:

First of all, we determine the reaction:

(NH₄)₂SO₄  +  2NaOH →  2NH₃  +  2H₂O  +  Na₂SO₄

We determine the moles of base:

(First, we convert the volume from mL to L) → 62.6 mL . 1L/1000 mL = 0.0626L

Molarity . volume (L) = 2.31 mol/L . 0.0626 L = 0.144 moles

Ratio is 2:1. Therefore we make a rule of three:

2 moles of hydroxide react with 1 mol of sulfate

Then, 0.144 moles of NaOH must react with (0.144 .1) /2 = 0.072 moles

If we want to determine the volume → Moles / Molarity

0.072 mol / 0.218 mol/L = 0.330 L

We convert from L to mL → 0.330L . 1000 mL/1L = 330 mL

6 0
3 years ago
13.0 g NaHSO4 is dissolved in water to make a 2.00 L solution what is the molarité
Sati [7]

Answer:

0.054 M

Explanation:

1 mol NaHSO4 -> 120 g

                   x    ->13 g

x= 0.108 mol NaHSO4

M= mol solute/ L solution

M= 0.108 mol NaHSO4/ 2.00L

M= 0.054 M

8 0
4 years ago
Describe three signs that a chemical reaction has taken place and give an example of each sign
il63 [147K]
Color change, temperature change, bubbling, state change

green to blue, hot to cold, bubbles (lol), and liquid to gas
7 0
3 years ago
Consider the balanced chemical reaction below and determine the percent yield of sodium bromide if 2.36 moles of iron(iii) bromi
hammer [34]
        First   the  theoretical yield   of Nabr
  by use  of  mole  ratio   between  FeBr3  and  NaBr  which  is  2:6   the   theoretical yield  

  =2.36  x6/2= 7.08  moles

the  %  yield  =  actual  yield/  theoretical  yield  x  100

that  is    6.14/7.08  x100=  86.72%
8 0
4 years ago
Read 2 more answers
6. What is the production of a magnetic field by electric current called.
nirvana33 [79]
The answer is electromagnetism.

The definition of electromagnetic is:
relating to the interrelation of electric currents or fields and magnetic fields.

Therefore, the verb form of electromagnetic would be ELECTRONAGNETISM
5 0
4 years ago
Other questions:
  • How many grams of KCl is produced if 32.4 grams of O2 is produced?
    7·1 answer
  • How many molecules of NH3 are produced from 8.01x10-4g of H2
    9·1 answer
  • The right answer for this problem
    12·1 answer
  • How many elements make up this compound C7H5(NO2)3
    8·1 answer
  • Why displacemet reaction are useful
    11·1 answer
  • How much water must be added to a 25 mL sample of 1.5 M sodium sulfate in order to make it 0.20 M?
    11·1 answer
  • Which change to the experimental design would improve the reliability of the engineers' measurements?
    7·1 answer
  • Stoichionetry Quiz
    13·1 answer
  • Select the correct answer.
    12·1 answer
  • 5. What is the mole fraction of NaOH in an aqueous<br> solution that contains 31.0 % NaOH by mass?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!