The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. When the electrons return to the ground state, they lose the excess energy in the form of 521-nmnm photons. What is the energy gap between the ground state and excited state in the laser material?

Q: laser pulse at 500. nm contains 4.95 mJ of energy. How many photons are in the laser pulse

A: E = nhv  E is energy n is number of photons h is planck's constant  v is frequency and it is ratio…

Q: To resolve an object in an electron microscope, the wavelength of the electrons must be close to the…

A: Given that : The diameter of protein molecule = 2.00 nm The mass of the electron = 9.11 x 10-31 kg…

Q: What is the frequency of a particle of wavelength 752.4 nm?

A: Given  Wavelength  = 752.4 nm 1 nm   = 10-9  meter  752.4   =  752.4 × 10-9  meter     Hence…

Q: Calculate the energy of one photon of yellow light that has a wavelength of 589nm.

A: The energy is calculated from the equation where energy is directly proportional to the…

Q: A 337 nm nitrogen laser puts out 2.00 W of power with a beam 4.90 mm in diameter. The beam is…

A: Energy = hcλ h is planck's constant   c is speed of light   λ is wavelength of light E =…

Q: A nitrogen laser generates a pulse containing 10.1 mJ of energy at a wavelength of 339.6 nm. How…

A:

Q: The surface of a particular metal is initially exposed to light with a wavelength of X₁ = 350 nm and…

A: From the photoelectric  effect, we know:

Q: A laser pointer is found to emit light with a wavelength of 568 nm. Determine the energy (in kJ) of…

A:

Q: A particular laser consumes 150.0 watts of electrical power and produces a stream of 1.33x10^19…

A: Given, 150watts = 150 J/s

Q: A foolish man attempted to rob a bank but only brought his red laser pointer, with a wavelength of…

A:

Q: Microwave ovens emit microwave energy with a wavelength of 12.8 cm.12.8 cm. What is the energy of…

A: Relation between energy and wavelength of a photon…

Q: A laser produces 20.0 mW of red light. In 1.00 hr, the laser emits 2.29 * 1020 photons. What is the…

A: The relation between energy of a photon and wavelength is as follows,…

Q: An electron within the hydrogen atom "falls" from energy level 9 to energy level 2.  Using the…

A: Given n1 = 9 n2 = 2

Q: Consider x-ray radiation with a frequency of 4.09  1016 Hz. How many photons are contained in a…

A: The relation between energy and frequency is given by

Q: A proton in a linear accelerator has a de Broglie wavelength of 122pm. What is the speed of the…

A:

Q: An electron within the hydrogen atom "falls" from energy level 10 to energy level 2.  Using the…

A: An electron within the hydrogen atom "falls" from energy level 10 to energy level 2.  We have to…

Q: An argon ion laser puts out 4.8 W of continuous power at a of 532 nm. The diameter of the laser beam…

A: we have to calculate the number of photons that travel through the pinhole per second

Q: A pulse of monochromatic light consisting of 0.230 moles of photons contained a total energy of 67 0…

A: •Energy of 0.230 mole photon = 67 kJ = 67000 J•We have to calculate wavelength of light.

Q: A 753 nm krypton laser puts out 4.00 W of power with a beam 4.30 mm in diameter. The beam is pointed…

A:

Q: For a hydrogen atom, calculate the energy of the photon that would be emitted for the orbital…

A: The question is based on the concept of atomic spectra. we have been given initial and final states…

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A: Energy of the photons with wavelength = 532 nm is given as:

Q: Calculate the initial energy level when an electron in a hydrogen atom transitions into n = 4 after…

A:

Q: A laser with an energy of 2.65 kJ has a photon wavelength of 1300. nm. How many photons does this…

A: We can solve this problem by using following equation E = h×c / λ E = energy h = planck's constant c…

Q: A nitrogen laser puts out a pulse containing 35.2 mJ of energy at a wavelength of 337.1 nm. How many…

A: Given,

Q: Which has the shorter wavelength, light with frequency 422kHz or light with frequency 422MHz?

A: The frequencies of the given light are = 422 kHz and 422 MHz The wavelength with a short wavelength…

Q: Polycrystalline silver (Ag) has a work function of 4.26 eV . Light of wavelength 200 nm and…

A: Work function = 4.26 eV Wavelength = 200 nm Area = 1.2 cm x 1.2 cm

Q: An excited ion emits radiation at a wavelength of 431.9 nm in the visible range of the spectrum.…

A: The relation between wavelength, frequency and speed of light can be expressed as follows-

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A: Given,434.1 nm.

Q: How many photons are contained in a flash of green light (525 nm) that contains 275 kJ of energy

A: The energy associated with photons of light is given by the formula  E = n×hcλHere , E = energy n =…

Q: An excited ion emits radiation at a wavelength of 480.6 nm in the visible range of the spectrum.…

A:

Q: A photon of ultraviolet light possesses enough energy to mutate to a single strand of human DNA.…

A: Given, wavelenght of uv light λ=250 nm =250×10-9 mspeed of light =3.0×108 m/secplanck constant…

Q: A ground-state H atom absorbs a photon of wavelength 91.50 nm. What higher energy level did the…

A:

Q: A laser pulse at 635 nm contains 7.09 mJ of energy. How many photons are in the laser pulse? Use 3…

A:

Q: What is the energy of one mole of photons from a photon with a wavelenght of 327nm?

A:

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.