An ampule of napthalene in hexane contains 5.00x10^-4 mol napthalene. The napthalene is excited with a flash of light and then emits 15.5 J of energy at an average wavelength of 349 nm. What percentage of the naphthalene molecules emitted a photon?

Q: A laser produces 20.0 mW of red light. In 1.00 hr, the laser emits 2.29x10^20 photons. What is the…

A:

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: Calculate the frequency of a red light having a photon energy of 2.84×10−19 J.

A: Given: The energy of the light, (E) = 2.84×10−19 J.

Q: An ampule of napthalene in hexane contains 5.00×10^-4 mol napthalene. The napthalene is excited with…

A: The energy emitted from a single naphthalene molecule is calculated below in which E is the energy,…

Q: A 8.00 mL ampule of a 0.150 M solution of naphthalene in hexane is excited with a flash of light.…

A: we have to calculate the percentage of naphthalene molecules that emit photon

Q: The absorption peaks of chlorophyll a are at 665 nm and 465 nm. Assume that a plant can convert all…

A: Energy of a radiation is affected by its frequency or its wavelength. The radiant energy (E)…

Q: A liquid is exposed to infrared radiation with a wavelength of 8.94×10−4 cm.8.94×10−4 cm. Assume…

A:

Q: (a) Ozone formation in the upper atmosphere starts when oxygen molecules absorb UV radiation of…

A: (a) The frequency and energy of least energetic of photons has to be calculated. The given…

Q: A 368 g sample of water absorbs infrared radiation at 1.06 × 104 nm from a carbon dioxide laser.…

A:

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: Water is exposed to infrared radiation of wavelength 2.8×10−4 cm . Assume that all the radiation is…

A: Given data, wavelength (λ)=2.8×10-4cmMass of water=2.1g∆T=2.3KCwater=4.184J/g.K

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

A:

Q: A 5.00-mL ampule of a 0.100-M solution of naphthalene in hexane is excited with a flash of light.…

A: Molarity - ratio of number of moles of solute to the volume of solution in litres. Formula is,…

Q: A 9.00 mL ampule of a 0.150 M solution of naphthalene in hexane is excited with a flash of light.…

A: In the world of molecular interactions, the emission of photons is a fascinating phenomenon, often…

Q: Calculate the energy, in joules, of a photon of ultraviolet light with a frequency of 6.8 * 10^15…

A: E = hϑ where, E = energy (J) h = planck's constant…

Q: A liquid is exposed to infrared radiation with a wavelength of 9.56×10−4 cm.9.56×10−4 cm. Assume…

A: In this question, IR radiation Interacted with liquid sample and all of IR radiation absorb by the…

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 liquid is exposed to infrared radiation with a wavelength of 5.52 × 10-4 cm. Assume that all the…

A: Given that Heat energy = 46.75 J  wavelength = 5.52 × 10–4 cm = 5.52 × 10–6 m Number of photons =…

Q: Water (c = 4.184 J/g×oC) is exposed to infrared radiation of wavelength 2.8 × 10−4 cm.  Assume that…

A: Given: Wavelength= 2.8 × 10−4 cm Mass of water=  2.0 g  Temperature= 2.0 K

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: 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: 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 6.00 mL ampule of a 0.110 M solution of naphthalene in hexane is excited with a flash of light.…

A: Molarity is defined as moles per liter. So, number of moles and hence the number of molecules in…

Q: A 491 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation with a…

A: Given, A 491 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation…

Q: A single pulse of a laser yields an average of 8.17 × 1016 photons with λ = 501 nm. If melting ice…

A: Given, A single pulse of a laser yields an average of 8.17 × 1016 photons.Wavelength, Melting ice to…

Q: A 437 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation with a…

A: Given,  Mass of the Soup = 437g grams Initial Temperature of the Microwave Oven, Ti = 25. 0°C Final…

Q: A watt is a unit of energy per unit time, and one watt (W) is equal to one joule per second…

A: Since 9 % of the total energy is for visible light  Hence the energy released per second in visible…

Q: An argon ion laser puts out 5.0 W of continuous power at a wavelength of 532 nm. The diameter of the…

A:

Q: The power output of a laser is measured by its wattage, the number of joules of energy it radiates…

A: Given wavelength =514.5 nm (a)The wavelength and Energy of a radiation is related to each other as…

Q: A liquid is exposed to infrared radiation with a wavelength of 8.65×10−4 cm.8.65×10−4 cm. Assume…

A: The energy carried by a photon can be calculated as follows :       Here, h => planck's constant…

Q: Exposure to high doses of microwaves can cause tissue damage. Estimate how many photons, with A = 13…

A: Energy of one photon = hcλ  Where h = plank's constant = 6.626 x 10-34 J s c= velocity of light = 3…

Q: The power output of a laser is measured by its wattage, that is, the number of joules of energy it…

A: (a)

Q: A laser emits a laser pulse at a frequency of 3.76 x 10^12 Hz with total energy = 2.46 x 10^-17 J.…

A: Given:Frequency = 3.76×1012 s−1

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

A:

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

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.