The electron microscope uses the wave property of electrons to observe very small objects. A moving electron has a wavelength described by the de Broglie equation. What would be the kinetic energy, in J, of an electron with a wavelength of 0.765 nm, which would be equivalent to the wavelength of electromagnetic radiation in the X-ray region? (The mass of an electron is 9.11 × 10⁻²⁸ g.)

Q: The metal, when a metal was exposed to light at a frequency of 7.08 x 1015 51, electrons were…

A:

Q: The electron microscope uses the wave property of electrons to observe very small objects. A moving…

A:

Q: A certain microwave oven delivers 750 watts (J/s) of power to a coffee cup containing 35.1 g of…

A: Time taken and energy of photon is calculated for given

Q: Calculate the Energy (in Joules) of a photon emitted by a hydrogen atom when its electron drops from…

A: Initial energy level of electron (ninitial) = 5 The final energy level of electron (nfinal) = 2…

Q: when an excited electron in a hydrogen atom falls from n=5 to n=2, a photon of blue light is…

A: We have  E=2.718 X 10-18 Jz2(nfinal)2-z2(ninitial)2 Here, z=atomic number and n=energy level

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: The electron microscope uses the wave property of electrons to observe very small objects. A moving…

A: The given wavelength of the electron (λ) = 0.485 nm = 4.85×10-10 m The mass of an electron (m) =…

Q: Calculate the energy of electron in hydrogen at quantum levels: (i) n = 1; (ii) n = 2, and (iii) n =…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A highly excited atom of hydrogen makes a transition from the n = 9 to the n = 8 state and emits a…

A: USE FORMULA FOR HYDROGEN ATOM.

Q: How much energy is released from a hydrogen atom when an electron moves from ni= 2 to nf = 4? Where…

A: Bohr developed a rule for quantization of energy that could be applicable to the electron of an atom…

Q: A cornstalk grows from a seed that is watered and fertilized. Is this a physical or chemical change?…

A: Hello. Since your question has multiple subparts. We will solve the first three sub-parts for you.…

Q: Microwave ovens operate at a frequency ν = 2450 MHz. What is the energy of one photon of microwave…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: RGB color television and computer displays use cathode ray tubes that produce colors by mixing red,…

A: A wave is identified by its wavelength or by its frequency. Wavelength is the “distance covered by a…

Q: the different types of the s orbitals? By using the separation of variables, the wave function of a…

A: We have been asked to solve only part iv.  It is solved in step 2.

Q: If your favorite FM radio station broadcasts at a frequency of 104.5 MHz, what is the wavelength of…

A: The relation between wavelength and frequency is given as: cλ=ν where c is speed of light i.e.…

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Given: Wavelength of photon = 45.5 nm Threshold energy = 8.76×10-19 J

Q: The electron volt (eV) is a convenient unit of energy for expressing atomic- scale energies. It is…

A: Initial energy level ni = 5  Final energy level nf = 2

Q: Which of the following objects would we expect not to have any meaningful wave properties? O protons…

A: Ans According to the wave mechanics small particles such as proton, neutron, photons and electrons…

Q: Careful spectral analysis shows that the familiar yellow light of sodium lamps (such as street…

A: Given : The wavelength of photon 1 = 589.0 nm = 589.0 X 10-9 m                  (Since 1 nm = 10-9…

Q: Calculate the de Broglie wavelength of a 143-g baseball traveling at 95 mph. Why is the wave nature…

A: Given information: Mass of baseball = 143 g Speed of baseball = 95 mph

Q: Suppose an atom in an excited state can return to the ground state in two steps. It first falls to…

A: ∈=∈1 +∈2 ν =ν1 +ν2cλ=cλ1+cλ21λ1=1λ2+1λ2

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: What is the least amount of energy that can be emitted by an excited electron in a hydrogen atom…

A: For the least amount of energy electron should fall from n=4 which is also principal quantum number…

Q: The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the…

A:

Q: Microwave ovens use microwave radiation to heat food. The energy of the microves is absorbed by…

A: 1.To calculate the energy of a photon with a wavelength of 11.2cm, use the Energy relation:

Q: The electron microscope uses the wave property of electrons to observe very small objects. A moving…

A:

Q: The work function (ϕ) for the a metal is 7.00 x 10 -19 J. What is the longest wavelength of…

A: Given, work function (ϕ) for metal is 7.00 x 10 -19 J.

Q: Light in the infrared portion of the electromagnetic spectrum excites vibrations of certain…

A: Given: power = 1000 mW wavelength = 808 nm volume of water = 50.0 mL initial temperature = 22.0 oC…

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

A: Calculation of mass of coffee:

Q: What is the wavelength (in meters and in nanometers) of electromagnetic radiation whose energy per…

A:

Q: The work function of metal is the minimum energy required to produce photoelectric effect on that…

A: Work function for Potassium (K) = 2.30 eV a) The minimum energy required to eject an electron from…

Q: Sketch a diagram of the Bohr model of a hydrogen atom, Using arrows for excitation and relaxation of…

A: Given that -  Excitation of Electrons from n=1 to n=5  Relaxation of Electrons from n=5 to n=2…

Q: The photoelectric effect can be used in engineering designs for practical applications. For example,…

A: Energy = 2.0 x 10-20 J

Q: he electron microscope uses the wave property of electrons to observe very small objects. A moving…

A: To find out the wavelength of the electron moving with a kinetic energy of 3.55 × 10-19 J.

Q: What are photons? What role did Einstein’s explanation of the photoelectric effect play in the…

A: A beam of light consists of stream of particles. These particles of light are known as photons.…

Q: How much energy (in Joules) is associated with a de Brogile wavelength of 6.80 x 10-7 meters?

A: The relationship between the energy and wavelength is given by  where E = energy  h = Plank's…

Q: An electron confined to a one-dimensional box has energy levels given by the equation En =…

A: The wavelength  required to make a transition from n = 1 to n = 2 and from n = 2 to n= 3 has to be…

Q: In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by…

A: Photoelectric effect: A phenomenon in which electrons are ejected from or within a surface when it…

Q: What wavelength of light is required to excite an electron to the n = 6 state in hydrogen? b. If…

A: Energy of hydrogen atom excited state transition is given by

Q: a laser emits 5.4 x 1019 photons per second and transfers a total of 87.06 J of energy over 1.93…

A: 1- Number of photons = ( 5.4 × 1019s-1 ) × ( 1.93s )  Number of photons = 10.422 × 1019   We know…

Q: A dye molecule has electrons that are free to travel up and down a chain of atoms, giving electron…

A:

Q: (A) A photon has a wavelength of 599 nm. Calculate the energy of the photon in joules. Enter your…

A: Since you have posted multiple un-related questions, we are entitled to answer the first only.

Q: A certain microwave oven delivers 750. watts (J/s) of power to a coffee cup containing 100.0 g water…

A:

Q: The minimum energy required to remove an electron from a certain metal is 3.7 x 10– 19 J. If the…

A: Given,  The minimum energy required to remove an electron from a certain metal is 3.7 x 10-19 J Work…

Q: The blue color of the sky results from the scattering of sunlight by molecules in the air. The blue…

A: Wavelength is given by Wavelength = speed of light/frequency  And energy is given by  Energy = h×…

Q: The electron microscope uses the wave property of electrons to observe very small objects. A moving…

A: energy possesses by particle due to its motion is known as its kinetic energy.

Q: which has a threshold energy of 7.43 × 10⁻¹⁹ J, and ultraviolet light of wavelength 45.5 nm, what…

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.