(a) Ozone formation in the upper atmosphere starts when oxygen molecules absorb UV radiation of wavelengths ≤ 242 nm. Find the frequency and energy of the least energetic of these photons. (b) Ozone absorbs radiation of wavelengths 2200–2900 Å, thus protecting organisms from this radiation. Find the frequency and energy of the most energetic of these photons.

Q: Enormous numbers of microwave photons are needed to warm macroscopic samples of matter. A portion of…

A:

Q: Calculate the wavelength (in nanometers) of light with energy 1.89 × 10–20 J per photon. (b) For…

A: For part (a) we have to find the wavelength in nanometers of light with energy 1.89 × 10–20 J per…

Q: Calculate the frequency of a photon with a wavelength of 343.5nm?

A:

Q: Note: Reference the Fundamental constants table for additional information. Part 1 of 2 How many…

A: Heat required to melt 1 g of ice = 334 Jh = 6.62610-34 Jsc = 3108 ms-1molar mass of water = 18.02…

Q: An ampule of napthalene in hexane contains 5.00x10^-4 mol napthalene. The napthalene is excited with…

A: Given: 5.00 × 10-4 mol naphthalene in an ampule wavelength = 349 nm Energy emitted = 15.5 J…

Q: Exposure to a sufficient quantity of ultraviolet will redden the skin, producing erythema −−a…

A: Solution: The formula is E = hvwhere h = Plancks constant = 6.626 x 10-34 J s and v = frequency

Q: Enormous numbers of microwave photons are needed to warm macroscopic samples of matter. A portion of…

A: The energy required is given by, E=m.C.∆T where m is the mass, C is the specific heat and ∆T is the…

Q: What is the minimum number of microwave photons with a wavelength of 3.36 mm that will have to be…

A: Calculation of heat required to heat the water:

Q: An AM radio station broadcasts at 1030 kHzkHz , and its FM partner broadcasts at 98.3 MHzMHz .…

A:

Q: What is the wavelength in meters of an FM radio wave with frequency v = 88.0 MHz ? Express your…

A: Given that, Frequency of FM radio wave v = 88.0 MHz  = 88.0×106 s-1 Speed of light c = 3×108 m/s

Q: A laser pointer used in a lecture hall emits light at 445 nmnm. What is the frequency of this…

A: We have wavelength of light as 445 nm, we have to calculate the frequency of this light in s-1  upto…

Q: Suppose that you have a solution containing a substance whose molecules have two quantum states…

A: The population at high energy state is given by:        N = N0 e-ΔE/KT The percentage of molecules…

Q: The red lasers used to read the barcodes of products at the grocery stores produce light with a…

A: Energy of a photon E = hcλ where, h = plank's constant = 6.63×10-34kg m2s c = speed of light =…

Q: Sound waves, like light waves, can interfere with each other, giving maximum and minimum levels of…

A: a) Given information: Intensity of sound gets minimum from maximum when speaker one moved 0.16 m.…

Q: Calculate the wavelength of a stone (mass m=0.5kg) that is laying on the beach.

A:

Q: Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp frequency of 6.32x10^14…

A: Given the frequency of radiation =6.32×1014 Hzwe are asked to calculate the wavelength of…

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: An ampule of naphthalene in hexane contains 1.00×10-4 naphthalene. The naphthalene is excited with a…

A:

Q: Calculate the energy of one photon with a frequency of 5.09 x1014 s-1. What is the energy of a mole…

A:

Q: What is the wavelength of radiation that has a frequency of 5.8×1011 s −1?

A: Given, Frequency = 5.8*1011 s-1  Wavelength = ?

Q: Given the relationship between wavelength, frequency and the speed of light, calculate the frequncy…

A:

Q: The total energy of a mole of photons of a particular type of IR light is 10.7025 kJ. What is the…

A: Energy of one photon is inversely proportional to the wavelength of the radiation. Higher the energy…

Q: A local FM radio station broadcasts at a frequency of 93.2 MHz. Calculate the wavelength at which it…

A:

Q: What is the wavelength of radio waves, in meters, from a FM radio station found at 96.4 on the FM…

A: Given, Frequency of radiowaves = 96.4 MHz Velocity of light =3 × 108 m/s

Q: Calculate the wavelength in nanometers (nm) of a baseball weighing 5.25 ounces (oz) and moving at a…

A:

Q: A 493 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation with a…

A:

Q: How fast must a 139.3−g baseball travel in order to have a de Broglie wavelength that is equal to…

A: de Broglie's wavelength is given by the formula  λ = hmv λ = wavelength h = Planks constant =…

Q: Suppose you were standing 225 m from a radio transmitter what is your distance from the transmitter…

A: The frequency of the light is inversely proportional to its wavelength.  ν=cλ c = speed of light  v…

Q: what is the energy of a photon with a frequency of 100Mhz

A: To solve this problem, we have to calculate the energy of the given frequency.   For this we will…

Q: A certain shade of blue has a frequency of 7.32×10^14 Hz. What is the energy of exactly one photon…

A: given :-  frequency (v) = 7.32 × 1014 Hz  h = 6.626 × 10-34 J.s  To calculate :-  energy of one…

Q: Enormous numbers of microwave photons are needed to warm macroscopic samples of matter. A portion of…

A: In the given question we have to calculate the number of photons are absorbed by the water in the…

Q: A container with 0.2450.245 L of water is placed in a microwave and radiated with electromagnetic…

A: Since the energy required for increasing the temperature of water by 69.9 °C is given by  Q = mCpΔT…

Q: A local FM radio station broadcasts at a frequency of 97.9 MHz. Calculate the wavelength at which it…

A: Given, Frequency= 97.9 MHz= 97.9×10^6 s^-1

Q: Be sure to answer all parts. (a) What is the wavelength (in nm) of radiation that has an energy…

A:

Q: Determine the frequency of a laser’s radiation that has a wavelength of 3.75 × 103 pm.

A:

Q: Calculate the wavelength (in nanometers) of light with frequency 3.45 × 1014 s–1.

A:

Q: A particular sample of radiation has an energy content of 1.09x10^-3 J of energy. Calculate the…

A: Energy and number of moles of photons are related as,

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: Calculate the energy in joules of one photon of radiation with the wavelength of 5.00 μm.

A:

Q: Titanium (Φ = 6.94 ×× 10–19 J) and silicon (Φ = 7.77 ×× 10–19 J) surfaces are irradiated with UV…

A: Titanium (Φ = 6.94 ×× 10–19 J)  Silicon (Φ = 7.77 ×× 10–19 J) λ = 243 nm = 243 x 10-9 m

Q: A laser pointer used in the classroom emits light at 4950 Å, at a power of 4.00 mW. (One watt is the…

A: Energy of one photon =hCλWhere , h= Plank's constant                 6.626x10-34J-S            C=…

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.