Photovoltaic cells convert solar energy into electricity. Calculate the wavelength of light (in nm) required for silver (Φ =7.59 ×× 10–19 J) to emit an electron. Then determine whether or not silver could be used to generate electricity from the sun.  Assume that most of the electromagnetic energy from the sun is in the visible region near 500 nm.

Q: The metal, when a metal was exposed to light at a frequency of 7.08 x 1015 51, electrons were…

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Q: Which of the following is closest to the frequency of the light with photon energy of 3.3 x 10-19 J?…

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Q: Sodium vapor lamps are used to illuminate streets and highways. The very bright light emitted by…

A: ELECTROMAGNETIC SPECTRUM The distribution of electromagnetic radiation according to frequency or…

Q: The yellow colour in fireworks is often achieved by heating Sodium (I) chloride (NaCI) to about…

A: Given : The wavelength of light emitted = 520 nm = 520 X 10-9 m                        (since 1 m =…

Q: If l = 3, what are the possible values for ml? What happens to the wavelength as the frequency of…

A: permitted value of ml is given as  -l to +l the possible values for ml = -3 to +3…

Q: What is the maximum number of electrons that can be assigned the quantum numbers n = 4 and l = 2

A: Please find the attachment.

Q: 1a) What is the wavelength of a photon of light (in nm) whose frequency is 3.74 x 10^14Hz? 1b)…

A:

Q: when an excited electron in a hydrogen atom falls from n=5 to n=2, a photon of blue light is…

A: We have  E=2.718 X 10-18 Jz2(nfinal)2-z2(ninitial)2 Here, z=atomic number and n=energy level

Q: Useful Information: speed of light = 2.998 x 10° m/s h= 6.626 x10* J s Answer all questions…

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Q: A typical microwave oven produces 2.50 x 10 MHz light. What is the wavelength (in cm) of this light?…

A: 1 megahertz (MHz) = 29979.2458 wavelength in centimetres (cm) So to convert megahertz to centimetres…

Q: A liquid is exposed to infrared radiation with a wavelength of 2.74 x 104 cm. Assume that all the…

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Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Given: Wavelength of photon = 45.5 nm Threshold energy = 8.76×10-19 J

Q: A certain microwave oven delivers 1250 watts of power to a coffee cup containing 125.0 gm of water…

A: Given: Power of microwave oven= 1250watts Mass of water= 125.0 g The wavelength of the microwave =…

Q: When light with a wavelength of 198 nm strikes the surface of tin metal. What is the photon energy…

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Q: light

A: Hz unit also s-1  Frequency ( v ) = 2.50 • 10^4 MHz  [ 1MHz = 10^6 Hz ]  Frequency ( v ) = 2.50 •…

Q: What is the wavelength in nm (to the nearest whole #) of light emitted when the hydrogen atom…

A: SOLUTION: Step 1: The expression for the wavelength of radiation is given as,

Q: How many atomic orbitals are there in a g subshell? What is the maximum value of the secondary…

A: Complete solution is given below in next step

Q: Consider the transition of the electron in the hydrogen atom from n = 4 to n = 9. a) Is ΔE for…

A: a) ΔE for the process positive or negative has to be determined.b) The light will be absorbed or…

Q: FM-95, an FM radio station, broadcasts at a frequency of 9.51 ×× 107 s−1 (95.1 MHz). What is the…

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Q: Careful spectral analysis shows that the familiar yellow light of sodium lamps (such as street…

A: Given : The wavelength of photon 1 = 589.0 nm = 589.0 X 10-9 m                  (Since 1 nm = 10-9…

Q: What wavelength of light, in nm, is required to excite an electron from n = 4 to n = 2?

A: Answer:- Firstly energy change is calculated by using the transition between the energy states and…

Q: If an electron were to move from n=4 to n=2 and produce light with a wavelength of 495 nm, what is…

A: Given,Wavelength in nanometers = 495 nm.Conversion of nanometers (nm) to meters (m) can be done by…

Q: Iron has a work function () of 4.50 eV. What is the longest wavelength of light, in nm, that will…

A: 1) If the energy of light falling on the surface has greater energy than the work function of the…

Q: In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by…

A: According to Einstein's photo electric effect  E= hcλ=wo+ KE  E= Energy of incident light  h= planks…

Q: Most cellphones operate at a frequency of 8.00 x 102 MHz.  Calculate the wavelength of these…

A:

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: When we energy of Photon to metal then electron which have minimum energy tha is equal to threshold…

Q: 1a) What is the wavelength of a photon of light (in nm) whose frequency is 3.74 x 10^14 Hz?…

A:

Q: An electron in a hydrogen atom transitions from n=3 to n=6. What is the longest wavelength of a…

A: Spectral series of hydrogen atom are the following. n=1   Lyman        (UV region)n=2   Balmer…

Q: Microwave ovens use microwave radiation to heat food. The energy of the microves is absorbed by…

A: 1.To calculate the energy of a photon with a wavelength of 11.2cm, use the Energy relation:

Q: Calculate wavelength and frequency of waves. (a) A local radio station broadcasts at a frequency of…

A: (a) v = 93.6 MHz = 93.6 x 106 Hz λ = ?   (b) λ = 691 nm = 691 x 10-9 m v = ?

Q: The work function (ϕ) for the a metal is 7.00 x 10 -19 J. What is the longest wavelength of…

A: Given, work function (ϕ) for metal is 7.00 x 10 -19 J.

Q: Planck's constant h = 6.6256 x 1034 J.sec; speed of light c = 2.9979 x 10° m/s For electromagnetic…

A:

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Given : Threshold energy of metal, T = 9.04 X 10-19 J And wavelength of light or photon used = 45.5…

Q: What is the wavelength (in meters and in nanometers) of electromagnetic radiation whose energy per…

A:

Q: Calculate the wavelength in meters of electromagnetic radiation that has a frequency of 1.14 x 10…

A: Given: Frequency, v=1.14 x 108 s-1 Speed of light, c= 3.00 x 108 m s-1 Wavelength=?

Q: A particular form of electromagnetic radiation has a frequency of 7.60×10^14Hz. a)What is its…

A: Use the formula of energy , frequency, wavelength of a electromagnetic wave.

Q: Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of…

A: Given, frequency = 6.32 x 1014 Hz Speed of light , c = 3 x 108 m/s  Wavelength = ?

Q: The photoelectric effect can be used in engineering designs for practical applications. For example,…

A: Energy = 2.0 x 10-20 J

Q: For potassium (K), the work function equals 3.669 x 10 19 J (per photon). a) What is the minimum…

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Q: What is the wavelength in nm of light that is emitted when an excited electron in the hydrogen atom…

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Q: What are the energy in joules and the wavelength in meters of the photon produced when an electron…

A: The change in energy in He atom is given by, ∆E=E1-E2=2.18×10-181n12-1n22 where n1 and n2 are the…

Q: Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron…

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Q: An electron confined to a one-dimensional box has energy levels given by the equation En =…

A: The wavelength  required to make a transition from n = 1 to n = 2 and from n = 2 to n= 3 has to be…

Q: Sodium vapor lamps are used to illuminate streets and highways. The very bright light emitted by…

A: A question based on unit conversion, which is to be accomplished.

Q: Calculate the wavelength of light emitted when an electron in the hydrogen atom makes a transition…

A:

Q: a laser emits 5.4 x 1019 photons per second and transfers a total of 87.06 J of energy over 1.93…

A: 1- Number of photons = ( 5.4 × 1019s-1 ) × ( 1.93s )  Number of photons = 10.422 × 1019   We know…

Q: If an electron were to move from n=4 to n=2 and produce light with a wavelength of 580 nm, what is…

A: Conversion factor is a formula which defines the relation between one set of units of a particular…

Q: It requires 6.89 x 10^-19 J of energy of electromagnetic radiation to remove an eletron from a…

A: Given Energy of electromagnetic radiation as 6.89*10-19 J

Q: Calculate the wavelength of light emitted from a hydrogen atom when it undergoes a transition from…

A:

Q: which has a threshold energy of 7.43 × 10⁻¹⁹ J, and ultraviolet light of wavelength 45.5 nm, what…

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Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.