Assuming the wavelength for fluorescence is observed at 475 nm and the wavelength of the phosphorescence process occurs at 523 nm, find the energy released from 12.35 g of Calcium atoms. (Assume that there is 1 excited electron per calcium atom and every one of them relaxes via the processes above.) (Fluorescence occurs 2.45 times more frequently than phosphorescence)

Q: The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of…

A:

Q: Which has the least kinetic energy?   A. xenon moving at a velocity of 450 m/sec   B.…

A: Kinetic energy is given by the equation:

Q: What is the lowest allowed energy for a Fe* atom? -5.45 x 1017) O-1.07 x 10 16 J -2.18 x 101 O -1.77…

A:

Q: The energy from radiation can be used to cause the rupture of chemical bonds. A minimum energy of…

A: G

Q: 6.126 The sun is surrounded by a white circle of gaseousmaterial called the corona, which becomes…

A: To find: The temperature of the sun's corona

Q: Calculate the kinetic energy of an electron moving at a speed of 3.88 x 105 m/s

A: Speed of an electron, ν = 3.88 × 105 m s-1  Mass of an electron, m = 9.11 × 10-31 kg Kinetic energy…

Q: Calculate for H atom, the energy of its lowest (most negative) energy level

A: Applying basic formula of energy calculation of atom. -13.59Z2/n2

Q: Consider the following types of electromagnetic radiation: (1) microwave, (2) ultraviolet, (3) radio…

A: Energy of radiation= h×frequency  frequency= c÷wavelength

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: If n = 2, what is the maximum allowed value for ℓ?

A: If n = 2, what is the maximum allowed value for ℓ?

Q: An fm radio station broadcasts at 70 megahertz. What is the energy of each photon in Joule?

A: According to plank law, energy of a photon having frequency v given by  E = hv Where h = plank's…

Q: Highly excited atoms have electrons with large principal quantum numbers. Such Rydberg atoms have…

A: a) The energy level for an atom is given by the expression is as follows, The difference in energy…

Q: The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2…

A: The relationship between wavelength and energy is given as:

Q: Calculate the energy difference (ΔE) for the electron transition of n = 6 to n = 1 for 1.00 mol of…

A:

Q: Microwave ovens use microwave radiation to heat food. Theenergy of the microwaves is absorbed by…

A:

Q: The energy required to dissociate the H2 molecule to H atoms is 432 kJ/mol H2.  If the dissociation…

A: Given data: Energy required to dissociate the H2 molecule = 432 kJ/mol H2 Required data: Avogadro's…

Q: 1.2336 eV of energy is absorbed when an electron transits from the lower energy level corresponding…

A:

Q: 5.1. A crystal is composed of identical atoms which only interact with one anotber very weakly. Each…

A:

Q: What is the color of light with energy of 252.5 kJ/mol?

A: To find out the color of light, we have to know the wavelength of light.  Wavelength from energy The…

Q: One of the radiographic devices in a dentist office emits an X-ray of wavelength 2.09 x 10-11 m.…

A: Frequency of light (v) = Speed of light / Wavelength                                   = 3 x 108 m…

Q: In a future hydrogen-fuel economy, the cheapest source of H₂ will certainly be water. It takes 467…

A: The energy of the photon that can be related to the frequency is furnished as follows: E=hν…

Q: Consider an Ar atom trapped in square box with length 1 m. Assume that the energy of the Ar atom is…

A:

Q: Calculate the longest wavelength (nm) that can provide an energy of at least 449 kJ/mol.

A: The energy associated by one mole of photons is given by E = NAhcλh = Plank's constant = 6.626×10-34…

Q: For the following electron configuration, identify the element and determine if it is in the ground…

A: →Electronic  configuration →1s1 2s⏟22p63s23p6       This is an excited state electronic…

Q: quantum number;n=4,n=3,n=2,n=1 are involved in the transition that requires least energy and why?

A: Basic Introduction about Transition Energy In this question, given value of first four principles…

Q: A beam of photons is incident on the surface of a metal whose threshold frequency is vo. The energy…

A:

Q: When a hydrogen electron is excited from level n 3 to level n 5, a photon of wavelength m is…

A:

Q: A microwave oven generates photons at a frequency of 900 GHz. Assuming all the photonenergy is…

A: Given: Mass of water is 125 g. Initial temperature is 25° C. Final temperature is 100° C. Frequency…

Q: Some chemical reactions, such as formation of ozone in Earth’s stratosphere, can be initiated by…

A:

Q: visible light has a photon energy of 4.263×10−19 J.4.263×10−19 J. Determine its wavelength,…

A: Given that  Energy (E) = 4.263×10-19 J We know that , Energy (E) = hν  where h is the planck's…

Q: Calculate the amount of energy

A: The amount of energy released when one mole of an ion-pair is formed can be easily determined by…

Q: The ‘fine‑structure constant’, α, plays a special role in the structure of matter; its approximate…

A: de Brgalie gives a relationship between wavelength, and momentum. It can be given as: λ=hp Where λ…

Q: Q8/ If the mean number of atoms in a system is 4.4x1020 atoms, each atom has energy of -3.4eV, the…

A:

Q: The lasher used to read Blu-Ray disc have a wavelength of 405 nm photons have an energy of _____ J,…

A:

Q: Microwave ovens emit microwave energy with a wave length of 18.9cm. What is the one energy of…

A:

Q: Calculate the change in energy for an electron transitioning from the n= 4 state to the n=3 state.…

A:

Q: violet light has a wavelength of about 410nm. what is it's frequency? calculate the energy of one…

A: Wavelength and frequency are related to each other with speed of light, i.e. speed of light =…

Q: Calculate the energy difference (AE) for the electron transition of n = 6 ton=1 for 1.00 mol of…

A: We would use formula of energy of hydrogen atom . Then calculate formula for energy difference and…

Q: what would be its wavelength (in meters)?

A:

Q: Ultraviolet radiation and radiation of shorter wavelengths can damage biological molecules because…

A: Given: E=348×103 J.mol-1 Formula used: Energy in J.mol-1, E=Nahcλ

Q: Consider an Ar atom trapped in square box with length 1 m. Assume that the energy of the Ar atom is…

A: The energy for a particle in a box is given by the expression: E=h28mL2(nx2+ny2+nz2)

Q: The wavelength of a beam of light is 24 mm. What is the energy of one of its photons?

A: Using wavelength of the light beam provided, the energy of its photon can be calculated.

Q: The wavelength of electromagnetic radiation can be determined by knowing what other value O speed of…

A:

Q: Suppose a certain atom has two available states that are separated in energy by 1.97 eV. Given a…

A: Given Number of moles = 1.90 mol                                  = 1.90x6.023x1023 atoms…

Q: energy

A:

Q: Consider a transition in which the electron of a hydrogenatom is excited from n = 1 to n = ∞. (a)…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

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.