1. The work function of a certain metal is 3.06 X 10 ^ - 19 J. If the metal  exposed to a radiation having   wavelength of 450nm . Calculate the speed  of electron as it ejected from the metal surface . The mass of electron is 9.11 x 10 ^ - 31 kg 2.  The temperature of a container is decreased by 27°C to standard temperature. The new volume of contained gas is found to be 2.0 L. What was the original volume?

Q: From the following list of observations, choose the one that most clearly supports the conclusion…

A: EXPLANATION: Diffraction is the proccess by which light is scattered from a regular array of points…

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A: a) The radio wave travels at the speed of light, it means that the speed of radio wave is 3×108 m/s.…

Q: The work function of a certain metal is 3.06 X 10 ^ - 19 J. If the metal exposed to a radiation…

A:

Q: Calculate the wavelength (in meters) associated with a neutron with a mass of 1.675 x 10⁻²⁴ g and a…

A: Given  Mass of Neutron ( m ) = 1.675 × 10-24 gram  Kinetic Energy ( K.E )    =  6.21 × 10-21 Joule…

Q: 34. The work function of a certain metal is 3.06 X 10 ^ - 19 J. If the metal  exposed to a radiation…

A: Given that -  Work function of metal = 3.06×10-19 J  Wavelength = 450 nm = 450×10-9 m  Mass of…

Q: The work function of titanium metal is 6.93 x 10-19 J. Calculate the kinetic energy of the ejected…

A:

Q: Is there enough energy released from a hydrogen atom during an n = 7 to n = 2 electron transition to…

A: Introduction :  We have to calculate energy .

Q: What is the peak frequency of the blackbody radiation emitted from a star whose temperature is 5400…

A:

Q: When a metal was exposed to photons at a frequency of 1.10 x 1015 s-, electrons were emitted with a…

A:

Q: Calculate the wavelengths (in meters) of radiation of the following frequencies. a. 8.83 x 10¹5 S-1…

A: The relationship between wavelength and frequency is expressed as: λ=cv Where, c is the speed of…

Q: If a photon with an energy of 8.91 x 10-19 J hits the surface of a metal with a binding energy of…

A:

Q: When photons with a wavelength of 310. nm strike a metal plate, the maximum velocity of the ejected…

A: Minimum amount of energy required to remove an electron from an atom is electron binding energy.

Q: 9. Determine (a) the energy, in joules per photon, of radiation of frequency 7.39 X 1015 s1; |(b)…

A: Given:(a).Radiation of frequency=7.39*1015s-1(b). Radiation of frequency =1.97*1014s-1

Q: Cobalt-60 is a radioactive isotope used to treat cancers. A gamma ray emitted by this isotope has an…

A: To calculate the frequency (in Hz) and wavelength (in nm) of the gamma-ray that has an energy of…

Q: Gamma ray radiation falls in the wavelength region of -16 1.00 x 107 to 1.00 x 10-¹1 meters. What is…

A:

Q: 11. What is the frequency of a wave carrying 8.35 x 10-18 J of energy?

A: Given that,    Energy of wave E = 8.35×10-18 J  Plank constant h = 6.626×10-34 J.s

Q: binding energy

A:

Q: Give an approximate range of wavelengths for type of electromagnetic radiation and summarize the…

A: a. Gamma rays:

Q: 9. The work function of a collected metal is 8.0 x 10-10 J. Should a radiation of 150 nm hit the…

A:

Q: a metal has a minimum energy threshold of 266 kJ/mol, what happens if light at a wavelength of 400.0…

A:

Q: (a) A laser used in orthopedic spine surgery produces radiation with a wavelength of 2.10 mm.…

A:

Q: This radiation is emitted simultaneously. Which is the most energetic? А. A wave length of 234 nm В.…

A: Correct option is (D) explanation is given below

Q: What is the energy (in kJ) of one mole of photons associated with radiation that has a frequency of…

A:

Q: Calculate the wavelength (in nm) of light with energy 1.83×10−20 J per photon. For light of…

A: Wavelength can be calculated using the given equation:

Q: Calculate the energy separations in joules , kilojoules per mole , electronvolts , and reciprocal…

A: The energy of nth level of 1D box is given by relation - E = (n2h2)/(8ma2) ΔE = Ef - Ei

Q: A particle of matter is moving with a kinetic energy of 8.15 eV. Its de Broglie wavelength is 2.34 x…

A: The kinetic energy of the particle is given by, => K = 12mv2 where K = kinetic energy in J m =…

Q: What is the wavelength of radiation that has a frequency of 2.10 x 1014 s-1?

A: To calculate wavelength of radiation, use the formula : f = c/λ λ=c/f         --------(1) where , c…

Q: In order for a thermonuclear fusion reaction of two deuterons (21 H+) to take place, the deuterons…

A:

Q: When radiation having a wavelength of 360 nm is directed at the surface of a certain metal,…

A: The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light,…

Q: photon shines on the surface of a piece of metal with the frequency of 1.37 x 1015 s¹ Calculate the…

A: 1- First calculate the energy of a photon light :  Energy of photon ( E ) = h × v  Where, h = 6.626…

Q: How much energy is contained in 1 mol of each of the following? γγ-ray photons with a wavelength of…

A: The energy of a photon is calculated by- The above formula is used to calculate the energy of 1…

Q: -19 20. A polished metal surface requires 1.75 × 10"1º J to remove electrons via the photoelectric…

A: Concept: The energy of the photon is equal to the sum of the threshold energy and kinetic energy of…

Q: When light with a wavelength of 197 nm strikes the surface of tin metal, electrons are ejected with…

A:

Q: The purpose of this problem is to show in three ways that the binding energy of the electron in a…

A:

Q: Is there enough energy released from a hydrogen atom during an n = 6 to n = 1 electron transition to…

A: 1/λ = 1.097x107m-1 (1/nf2 - 1ni2) λ = wavelength = ? nf = final energy level = 1 ni = initial…

Q: What would the speed of each particle be if it had the same wavelength as a photon of green light…

A: The speed (v) of each particle with the given wavelength (λ) can be calculated using De Broglie…

Q: Technetium (Tc; Z=43) is a synthetic element used as a ra-dioactive tracer in medical studies. A Tc…

A: Given: Kinetic energy=4.71×10-15J To find: De Broglie wavelength of the electron

Q: Calculate the ionization energy of the lithium atom in the steady state and then determine which…

A: Ionization energy is calculated using the expression: E=13.6Z2n2eV where Z is the atomic number and…

Q: 50. Calculate the kinetic energy of an electron ejected by a photon with wavelength 2.07×102 nm from…

A: We have to predict the kinetic energy of the electron.

Q: a metal plate has a binding energy of 350.0kJ/mol. if a photon with a wavelength of 275 nm strikes…

A: Given,The binding energy = 350.0 kJ/molWavelength = 275 nm

Q: Which one of the following forms of radiation has th highest energy? A A = 395 nm B A = 5.70 × 107 m…

A: When a radiation occurs then it is associated to a certain amount of energy.Here different values of…

Q: Burning strontium salts such as Sr(NO3)2 produces red photons. Calculate the energy (in joules per…

A: We have given:  Burning strontium salts :  Sr(NO3)2 produces red photons Wavelength =  670 nm…

Q: An excited ion emits radiation at a wavelength of 690.2 nm in the visible range of the spectrum.…

A:

Q: Calculate the energy of a quantum of radiation in the gamma ray range, with a frequency of 8.10…

A: Energy  is determined by using formula Energy=Planck's constant×Frequency.Energy=Planck's…

Q: Assuming that radiation with λ=15.0λ=15.0 cmcm is used, that all the energy is converted to heat,…

A: Given information: Initial temperature (T1) = 25 °C Final temperature (T2) = 95 °C Volume = 250 mL

Q: What is the wavelength of radiation whose frequency is 7.85 x 1014 sec-1 (Hz)?

A: Given,Frequency of a radiation = 7.85 x 1014 sec-1The wavelength of that radiation can be calculated…

Q: Pieces of potassium (phi = 3.68 * 10 ^ - 19 * j) and (Phi = 4.41 * 10 ^ - 19 * j) are exposed to…

A: We have Einstein's photoelectric equation Energy = work function + KE hcλ=ϕ+12mv2  For potassium, ϕ=…

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.