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
astraxan [27]
3 years ago
15

You measure the emission spectrum of an atom that you suspect to be hydrogen. You have no absolute calibration of the wavelength

, but the ratios of the first 3 wavelengths in the series that you measure are 1 : 0.741 : 0.661. Which series is this (e.g. Lyman, Balmer, Paschen, Brackett)? Justify your answer.
Chemistry
1 answer:
trapecia [35]3 years ago
5 0

Answer:

Explanation:

What we need to do here is to determine the ratios by using  the Rydberg equation starting with the transition to n1 = 1, 2,3, etc and see which one fits the data. Remember the question states that they are series and the wavelengths will be for increasing  energy levels.

1/λ = Rh x ( 1/n₁² - 1/n₂²)

Lyman series  ( n₁=1 and n₂= 2,3 etc)  for the first two lines, the ratios will be:

1/λ₁ /1/λ₂  =(1/1 -1/ 2²) / (1/1 -1/ 3²) ⇒ 0.84 ≠ 0.74  (the first ratio)

For Balmer series n₁ = 2  and n₂ = 3,4,5, etc

1/λ₁ /1/λ₂  =(1/4 -1/3²) / (1/4 -1/4²) ⇒ 0.741 = 0.741 (match!)

Lets use the third line to check our answer:

1/λ₁ /1/λ₂  =(1/4 -1/3²) / (1/4 -1/5²) = 0.66

You might be interested in
What does it mean to say an equation is balanced? Why is it important for an equation to be balanced?​
Rom4ik [11]

Answer: It is important for an equation to be balanced because if it is not then the reactants won't match the products.

Explanation: I don't know if you will understand this but here:

Let's say you're cooking eggs, you're reactants so to speak would be 3 eggs and 1 tablespoon of oil so you put it together using heat and a pan. Your products have to match what you have in the beginning. You cannot have an equation that looks like this

Reactants = 3eggs + 1Tbsp oil ---pan/heat---> 6eggs + 1 cup of oil

You cannot get something from what you don't have. The number of how much of an element you have must be the same of both sides of the equation.

8 0
10 months ago
You’ve just started a new job in the laboratory of the Food and Drug Administration. Your supervisor asks you to prepare a 1.50-
anastassius [24]

Answer:  118.5 grams

Explanation:

Molarity is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

n= moles of solute

V_s = volume of solution in ml = 500 ml

1.50=\frac{moles\times 1000}{500ml}

moles = 0.75

moles of solute =\frac{\text {given mass}}{\text {molar mass}}

0.75 =\frac{\text {given mass}}{158g/mol}

mass of KMnO_4 = 118.5 grams

Thus mass of KMnO_4 needed to prepare 500 mL of this solution iis 118.5 grams

6 0
2 years ago
What is the equation to calculate the volume of a cylinder?
Ira Lisetskai [31]

Answer:

the equation for cylinders is V = (pi)r2h

none of these are even close but i can do a little more research

sorry if this one wasnt as much help

3 0
3 years ago
In 1969, Neil Armstrong became the first person to walk on the Moon. Video coverage
lions [1.4K]

Answer:

Hi there! The answer is D. The astronaunt's weight on the Moon depends on the Moon's gravitational force.

(Hope this helps) Sky

7 0
3 years ago
Read 2 more answers
I NEED HELP AND WILL RATE BRAINLIEST!!!!
11Alexandr11 [23.1K]

Answer:

negative logarithmic

Explanation:

pH =- log[H+]

4 0
2 years ago
Other questions:
  • Why are biopharmaceuticals in high demand?
    5·1 answer
  • Which of the following would make a solution?
    8·2 answers
  • Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources of energy that could
    11·1 answer
  • A car traveling with a constant speed travels 150 km in 7200 s. What is the speed of the car?
    14·1 answer
  • A boy has a few bottles of soft drink in his restaurant. But ,unfortunately,these are not labelled.He has to serve the drinks on
    9·1 answer
  • (a) The absorbance of mixture at 400 nm was 0.40.
    9·1 answer
  • At equilibrium at 2500K, [HCl]=0.0625M and [H2]=[Cl2]=0.00450M for the reaction H2+Cl2 ⇌ HCl.
    7·1 answer
  • Please help me on this exsam question ASAP!!! Please
    6·1 answer
  • Describe briefly how to obtain the radial probability of an electron​
    10·1 answer
  • State the oxidation number of S in <br><img src="https://tex.z-dn.net/?f=H_%7B2%7DSO_%7B3%7D" id="TexFormula1" title="H_{2}SO_{3
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!