Question

1. Microwave radiation has wavelengths from 1.0×10-3 to 1.0 m, whereas the wavelength region for infrared radiation is 1.0×10-6 to 1.0×10-3 m. We can say that: (higher than, lower than, or the same)

1. The frequency of microwave radiation is infrared radiation.

2. The speed of microwave radiation is infrared radiation.

2.Infrared radiation has frequencies from 3.0×1011 to 3.0×1014 Hz, whereas the frequency region for microwave radiation is 3.0×108 to 3.0×1011 Hz. (higher than, lower than, or the same) We can say that:

1. The speed of infrared radiation is microwave radiation.

2. The wavelength of infrared radiation is microwave radiation.

3.A local AM radio station broadcasts at a frequency of 884 kHz. Calculate the wavelength at which it is broadcasting. Wavelength = m (1 kHz = 10 3 sec -1)

4. A local FM radio station broadcasts at a frequency of 99.6 MHz. Calculate the wavelength at which it is broadcasting. Wavelength = meter (1 MHz = 106 s -1)

5. A local FM radio station broadcasts at a frequency of 107.1 MHz. Calculate the energy of the frequency at which it is broadcasting. Energy = kJ/photon (1 MHz = 106 sec -1)

6. A local AM radio station broadcasts at an energy of 5.90×10-31 kJ/photon. Calculate the frequency at which it is broadcasting. Frequency = KHz (1 KHz = 103 sec -1)

7. Calculate the energy of an electron in the n = 4 level of a hydrogen atom. Energy = Joules

8. Calculate the energy for the transition of an electron from the n = 8 level to the n = 6 level of a hydrogen atom. E = Joules Is this an Absorption (A) or an Emission (E) process

9. If the value of n = 4 ... The quantum number l can have values from to . ... The total number of orbitals possible at the n = 4 energy level is .

10. If the value of l = 2 ... The quantum number ml can have values from to . ... The total number of orbitals possible at the l = 2 sublevel is .

Answer #1

frequency and wavelength are related as

frequncy = velocity of light / avelength

thus they are inversely proportional.

1)wavelength of microwave is higher than infra red. Thus

i) the frequency of microwave is lower than infra red.

ii) the speed of microwve is equal to infra red [As all elecromagentic radiatio travel with the speed of light]

2)

i) the speed of infra red and microwave is same.

ii) the wavlength of infrared is less than microwave.

3)frquencey = 884kHz = 884x10^{3} /sec

Wavelength = velocity/frequency

= 3.0x10^{8}m/sec / 884x10^{3}/sec

= 339.36 m

4) frequency = 99.6MHz = 99.6x10^{6} /sec

thus

wavelength = 3.0xx10^{8}m/sec / 99.6x10^{6}/sec

= 3.012 m

5) energy = h x frequency

h = Planck's constant = 6.626x10^{-34} J.sec

Given frequency = 107.1 MHz = 107.1 x 10^{6} /sec

Thus energy = 6.626x10^{-34} J.sec x107.1 x
10^{6} /sec

= 7.09 x 10^{-26} J

=7.09x10^{-29} kJ/photon

6)

1.The wavelength of a particular color of red
light is 665 nm.
The energy of this wavelength of light is kJ/photon.
(109 nm = 1 m)
2. A local FM radio station broadcasts at an energy of
6.15×10-29 kJ/photon.
Calculate the frequency at which it is broadcasting.
Frequency = MHz
(1 MHz = 106 sec -1)
3. A local AM radio station broadcasts at a frequency of
712 KHz.
Calculate the energy of the frequency at which it is
broadcasting....

Calculate the energy of a photon of electromagnetic radiation at
each of the following frequencies
Express your answer in joules using four significant
figures.
102.7 MHz (typical frequency for FM radio broadcasting)
1050. kHz (typical frequency for AM radio broadcasting)
836.4 MHz (common frequency used for cell phone
communication)

Calculate the wavelength of each of the following frequencies of
electromagnetic radiation.
Express your answer in meters using four significant
figures.
Part A.
103.8 MHz (typical frequency for FM radio broadcasting)
Part B.
1065 kHz (typical frequency for AM radio broadcasting)
Part C.
835.6 MHz (common frequency used for cell phone
communication)

Calculate the wavelength of each frequency of electromagnetic
radiation:
Part A
101.0 MHz (typical frequency for FM radio broadcasting) Express
your answer using four significant figures.
Part B
1075 kHz (typical frequency for AM radio broadcasting) (assume
four significant figures)
Part C
835.6 MHz (common frequency used for cell phone
communication)

1) The Pauli Exclusion Principle tells us that
no two electrons in an atom can have the same four quantum
numbers.
Enter ONE possible value for each quantum number of an electron
in the orbital given.
Orbital
n
l
ml
ms
1s
There are a total of values possible for
ml.
2s
There are a total of values possible for
ml.
2) The Pauli Exclusion Principle tells us that
no two electrons in an atom can have the same four...

Infrared radiation (heat or thermal energy) spans the
electromagnetic spectrum from about 1 to 100 micrometers (10-6m).
What is this range expressed as energy (in Joules)? What is this
range expressed as frequency (in s-1 )?

Write the electron configurations for the following atoms. Enter
full electron configuration in order electrons fill the subshells.
Enter subshells in parentheses followed by numbers of electrons in
the exponent. For example you should enter
"(1s)2(2s)2(2p)5" for atom of
fluorine. The answer is case sensitive.
As, Cl, Ni, Si
Calculate the energy in joules of a photon of green light having
a wavelength of 537 nm. Report your result to three significant
figures.
What is the letter code for a...

A. What is the energy in 10-3 eV of a photon that has
a momentum of 6.13×10−29 kg ⋅ m/s ?
B. What is the energy in 10-9 eV of a photon in a
radio wave from an AM station that has a 1,506 kHz broadcast
frequency?
C. Calculate the frequency in 1020 Hz of a 0.571 MeV
γ-ray photon.
D. A certain molecule oscillates with a frequency of
1.73×1013 Hz. What is the approximate value of
n for a...

1)A gas is allowed to expand, at constant temperature, from a
volume of 1.0 L to 10.1 L against an external pressure of 0.50 atm.
If the gas absorbs 250 J of heat from the surroundings, what is the
change in energy of the gas in J?
2)What is the energy in joules of one photon of microwave
radiation with a wavelength 0.122 m? (c = 2.9979 108
m/s; h = 6.626 10–34 Js)
3) What element is reduced in...

chapter 24 part 2
1. What is the frequency of a 17.7 m wavelength radio
wave? Give your answe in MHz.
2. A 2.34 m diameter university communications
satellite dish receives TV signals that have a maximum electric
field strength (for one channel) of 7.51 μV/m. What is the power
received by the dish in 10-13 W?
3. A radio antenna can pick up wavelengths between 2.6
μm and 57.2 μm. How much of the frequency spectrum in (in
1013 Hz) does...

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