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
balu736 [363]
3 years ago
15

When sodium is excited in a flame, two ultraviolet spectral lines at lambda - 372.1 nm and lambda = 376.4 nm respectively are em

itted . which wavelength represented photons?
 a) higher energy?
b) longer wavelengths?
c) higher frequences?
Chemistry
2 answers:
Allushta [10]3 years ago
6 0

Answer: Wavelength which represented photons with :

a) Higher energy is 372.1 nm

b) Longer wavelength is 376.4 nm

c) Higher frequency is 372.1 nm

Explanation:

E=h\nu =\frac{hc}{\lamda } (Planck's equation)

h=\text{Planck's constant}=6.62\times 10^{-34}J-s,c=\text{speed of light}=3\times 10^{8}m/s

\lambda = wavelength of the photon with energy E in meters.

\nu = frequency of the photon with energy E in hertz.

For first spectral line:

\lambda _1=372.1 nm=372.1\times 10^{-9} m(1nm=1\times 10^{-9} m)

E_1=\frac{hc}{\lambda_1}=\frac{(6.62\times 10^{-34}J-s)(3\times 10^{8}m/s)}{372.1\times 10^{-9} m}=5.33\times 10^{-19} joules

\nu _1=\frac{c}{\lambda _1}=\frac{3\times 10^{8}m/s}{372.1\times 10^{-9} m}=0.08 Hertz

For second spectral line:

\lambda _2=376.4 nm=376.4\times 10^{-9} m(1nm=1\times 10^{-9} m)

E_2=\frac{hc}{\lambda_2}=\frac{(6.62\times 10^{-34}J-s)(3\times 10^{8}m/s)}{376.4\times 10^{-9} m}=5.27\times 10^{-19} joules

\nu _2=\frac{c}{\lambda _2}=\frac{3\times 10^{8}m/s}{376.4\times 10^{-9} m}=0.07 Hertz

suter [353]3 years ago
3 0
The wavelength that represented photons is at <span>lambda = 376.4 nm.
The wavelength with the higher energy is at </span><span>lambda - 372.1 nm.
The longer wavelength is, of course, </span> at lambda 376.4 <span>nm.
The wavelength with the higher frequency is </span> 376.4 <span>nm.</span><span>
</span><span>
</span>
You might be interested in
Name two geologic features found on Earth surface that were caused by the movement of crustal plates.
My name is Ann [436]
Formation of mountains by one continental plate moving into another (Indian plate pushing north, forming the Himalayas)

Vocanoes from an oceanic plate being submerged beneath another plate and melting, causing liquid hot magma to rise to the surface
7 0
3 years ago
Read 2 more answers
Energy released from cell respiration is know as
never [62]
Energy released from cell respiration is know as ATP
4 0
3 years ago
Which of the following would be a warning sign that information about a weight loss medication is not reliable science?
Helga [31]

Answer:

c

Explanation:

I think it is right not sure but hope it helped

5 0
3 years ago
Which is a higher concentration, 10-9 M or 10-8 M? Explain.
andreyandreev [35.5K]

Answer:

10-9 Millimeters/liters

Explanation:

Because 10-9 M Is more than 10-8 M

I hope this is correct

3 0
3 years ago
The heat generated from the explosion is absorbed by the building and increases the temperature of the building. the property th
Brut [27]

Answer:Heat is a type of ENERGY. When absorbed by a substance, heat causes inter-particle bonds to weaken and break which leads to a change of state (solid to liquid for example). Heat causing a phase change is NOT sufficient to cause an increase in temperature.

Explanation:

7 0
1 year ago
Other questions:
  • a hydrogen-filled balloon was ignited and 1.60g of hydrogen reacted with 12.8g of oxygen. how many grams of water vapor were for
    14·1 answer
  • How do chaetoceros contribute to global atmospheric oxygen and carbon dioxide levels?
    14·1 answer
  • Which of these reactions are redox reactions and why?
    13·1 answer
  • The density of aluminum is 2.7 g.ml. what is the volume of 16.2 grams? HELP
    12·1 answer
  • During soldering, a mixture of metals ('solder') is heated until it melts. The molten metal falls into the gaps between two piec
    15·1 answer
  • What mass of NH3 (in grams) must be used to produce 5.65 tons of HNO3 by the Ostwald process, assuming an 80.0 percent yield in
    12·1 answer
  • The noble gases are grouped together in the periodic table. where are the noble gases in the table?
    11·2 answers
  • What mass of sodium sulfate is needed to make 2.5 L of 2.0 M solution?
    13·1 answer
  • Can someone solve this question please​
    15·1 answer
  • In the United States, the primary agents of socialization include
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!