Chemistry: Structure and Properties (2nd Edition)
2nd Edition
ISBN: 9780134293936
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 2, Problem 43E
A laser pulse with wavelength 532 nm contains 3.85 mJ of energy. How many photons are in the laser pulse?
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Chapter 2 Solutions
Chemistry: Structure and Properties (2nd Edition)
Ch. 2 - Why is the quantum-mechanical model of the atom...Ch. 2 - What is light? How fast does it travel in a...Ch. 2 - Define the wavelength and amplitude of a wave.Ch. 2 - Define the frequency of electromagnetic radiation....Ch. 2 - What determines the color of light? Describe the...Ch. 2 - What determines the color of a colored object?...Ch. 2 - Give an approximate range of wavelengths for each...Ch. 2 - Explain the wave behavior known as interference....Ch. 2 - Explain the wave behavior known as diffraction....Ch. 2 - Describe the photoelectric effect. How did...
Ch. 2 - How did the photoelectric effect lead Einstein to...Ch. 2 - What is a photon? How is the energy of a photon...Ch. 2 - What is an emission spectrum? How does an emission...Ch. 2 - Describe the Bohr model for the atom. How did the...Ch. 2 - Explain electron diffraction.Ch. 2 - What is the de Broglie wavelength of an electron?...Ch. 2 - What are complementary properties? How does...Ch. 2 - Explain Heisenberg’s uncertainty principle. What...Ch. 2 - What is a trajectory? What kind of information do...Ch. 2 - Why does the uncertainty principle make it...Ch. 2 - Newton’s laws of motion are deterministic. Explain...Ch. 2 - An electron behaves in ways that are at least...Ch. 2 - What is a probability distribution map?Ch. 2 - For each solution to the Schrödinger equation,...Ch. 2 - What is a quantum-mechanical orbital?Ch. 2 - What is the Schrödinger equation? What is a wave...Ch. 2 - What are the possible values of the principal...Ch. 2 - What are the possible values of the angular...Ch. 2 - What are the possible values of the magnetic...Ch. 2 - Explain the difference between a plot showing the...Ch. 2 - Sketch the general shapes of the s, p, and d...Ch. 2 - List the four different sublevels. Given that only...Ch. 2 - Why are atoms usually portrayed as spheres when...Ch. 2 - The distance from the sun to Earth is 1.496108 km....Ch. 2 - The nearest star to our sun is Proxima Centauri,...Ch. 2 - List these types of electromagnetic radiation in...Ch. 2 - List these types of electromagnetic radiation in...Ch. 2 - Calculate the frequency of each wavelength of...Ch. 2 - Calculate the wavelength of each frequency of...Ch. 2 - Calculate the energy of a photon of...Ch. 2 - Calculate the energy of a photon of...Ch. 2 - A laser pulse with wavelength 532 nm contains 3.85...Ch. 2 - A heat lamp produces 32.8 watts of power at a...Ch. 2 - Determine the energy of 1 mol of photons for each...Ch. 2 - How much energy is contained in 1 mol of each?...Ch. 2 - Sketch the interference pattern that results from...Ch. 2 - What happens to the interference pattern described...Ch. 2 - The resolution limit of a microscope is roughly...Ch. 2 - The smallest atoms can themselves exhibit...Ch. 2 - What is the de Broglie wavelength of an electron...Ch. 2 - A proton in a linear accelerator has a de Broglie...Ch. 2 - Prob. 53ECh. 2 - A 0.22-caliber handgun fires a 27-g bullet at a...Ch. 2 - An electron has an uncertainty in its position of...Ch. 2 - An electron traveling at [1.35 \times {10^5}\] m/s...Ch. 2 - Which electron is, on average, closer to the...Ch. 2 - Which electron is, on average, further from the...Ch. 2 - What are the possible values of I for each given...Ch. 2 - What are the possible values of m1 for each given...Ch. 2 - Which set of quantum numbers cannot occur together...Ch. 2 - Which combinations of n and I represent real...Ch. 2 - Prob. 63ECh. 2 - Sketch the 3d orbitals. How do the 4d orbitals...Ch. 2 - An electron in a hydrogen atom is excited with...Ch. 2 - Determine whether each transition in the hydrogen...Ch. 2 - According to the quantum-mechanical model for the...Ch. 2 - According to the quantum-mechanical model for the...Ch. 2 - Calculate the wavelength of the light emitted when...Ch. 2 - Calculate the frequency of the light emitted when...Ch. 2 - Prob. 71ECh. 2 - An electron in a hydrogen atom relaxes to the [n =...Ch. 2 - Ultraviolet radiation and radiation of shorter...Ch. 2 - The human eye contains a molecule called...Ch. 2 - An argon ion laser puts out 5.0 W of continuous...Ch. 2 - A green leaf has a surface area of 2.50 cm2. If...Ch. 2 - Prob. 77ECh. 2 - An X-ray photon of wavelength 0.989 nm strikes a...Ch. 2 - Prob. 79ECh. 2 - The energy required to ionize sodium is 496...Ch. 2 - Prob. 81ECh. 2 - Suppose that, in an alternate universe, the...Ch. 2 - Prob. 83ECh. 2 - Prob. 84ECh. 2 - The binding energy of electrons in a metal is 193...Ch. 2 - In order for a thermonuclear fusion reaction of...Ch. 2 - Prob. 87ECh. 2 - Prob. 88ECh. 2 - The iodine molecule can be photodissociated...Ch. 2 - A sample of naphthalene in hexane contains 5.00104...Ch. 2 - Prob. 91ECh. 2 - Prob. 92ECh. 2 - Prob. 93ECh. 2 - The energy of a vibrating molecule is quantized...Ch. 2 - The wave functions for the 1s and 2s orbitals are...Ch. 2 - Before quantum mechanics was developed, Johannes...Ch. 2 - Find the velocity of an electron emitted by a...Ch. 2 - Water is exposed to infrared radiation of...Ch. 2 - Prob. 99ECh. 2 - A metal with a threshold frequency of 6.711014s1...Ch. 2 - Find the longest wavelength of a wave that can...Ch. 2 - The amount of heat to melt ice is 0.333 kJ/g. Find...Ch. 2 - Explain the difference between the Bohr model for...Ch. 2 - The light emitted from one of the following...Ch. 2 - Determine whether an interference pattern is...Ch. 2 - Which transition in the hydrogen atom results in...Ch. 2 - Discuss the nature of light with your group....Ch. 2 - How are electrons like baseballs? How are they...Ch. 2 - What are all the possible values of m1 if l = 0...Ch. 2 - Have each group member choose a set of quantum...Ch. 2 - How many nodes are there in the 1s, 2p, and 3d...Ch. 2 - Sunscreen contains compounds that absorb...Ch. 2 - Which wavelength of light has the highest...Ch. 2 - Which kind of electromagnetic radiation contains...Ch. 2 - How much energy (in J ) is contained in 1.00 mole...Ch. 2 - Light from three different lasers (A, B, and C),...Ch. 2 - Calculate the wavelength of an electron traveling...Ch. 2 - Which set of three quantum numbers does not...Ch. 2 - Calculate the wavelength of light emitted when an...Ch. 2 - Which electron transition produces light of the...Ch. 2 - How much time (in seconds) does it take light to...Ch. 2 - Which figure represents a d orbital? None of the...
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- This laser emits green light with a wavelength of 533 nm. (a) What is the energy, in joules, of one photon of light at this wavelength? (b) If a particular laser produces 1.00 watt (W) of power (1 W = 1 J/s), how many photons are produced each second by the laser?arrow_forwardThe eyes of certain reptiles pass a single visual signal to the brain when the visual receptors are struck by photons of a wavelength of 850 nm. If a total energy of 3.151014 J is required to trip the signal, what is the minimum number of photons that must strike the receptor?arrow_forward6.17 The laser in most supermarket barcode scanners operates at a wavelength of 632.8 nm. What is the energy of a single photon emitted by such a laser? What is the energy of one mole of these photons?arrow_forward
- The lasers used in supermarket scanners emit red light at a wavelength of 633 nm. Compact disc players use lasers that emit light (that is not visible) at 840 nm. Which photonsthose emitted by supermarket scanners or compact disc (CD) playerscontain more energy per photon? Supermarket scanners CD players They both contain the same amount of energy per photon.arrow_forwardAs the weapons officer aboard the Srarship Chemistry, it is your duty to configure a photon torpedo to remove an electron from the outer hull of an enemy vessel. You know that the work function (the binding energy of the electron) of the hull of the enemy ship is 7.52 1019 J. a. What wavelength does your photon torpedo need to be to eject an electron? b. You find an extra photon torpedo with a wavelength of 259 nm and fire it at the enemy vessel. Does this photon torpedo do any damage to the ship (does it eject an electron)? c. If the hull of the enemy vessel is made of the element with an electron configura tion of [Ar]4s13d10, what metal is this?arrow_forward6.16 Various optical disk drives rely on laser operating at different wavelengths, with shorter wavelengths allowing a higher density of data storage. For each of the following drive types, find the energy of a single photon at the specified wavelength. (a) CD, =780nm , (b) DVD, =650nm , (c) Blu-ray disc, =405nmarrow_forward
- A photon of light produced by a surgical laser has an energy of 3.0271019 J. Calculate the frequency and wavelength of the photon. What is the total energy in 1 mole of photons? What is the color of the emitted light?arrow_forwardA baseball weighs 142 g. A professional pitcher throws a fast ball at a speed of 100 mph and a curve ball at 80 mph. What wavelengths are associated with the motions of the baseball? If the uncertainty in the position of the ball is 12 wavelength, which ball (fast ball or curve) has a more precisely known position? Can the uncertainty in the position of a curve ball be used to explain why batters frequently miss it?arrow_forwardWhat type of relationship (direct or inverse) e xists between wavelength, frequency, and photon energy? What does a photon energy unit of a joule equal?arrow_forward
- A lightbulb radiates 8.5% of the energy supplied to it as visible light. If the wavelength of the visible light is assumed to be 565 nm, how many photons per second are emitted by a 75-W lightbulb? (1W=1J/s)arrow_forwardPhotons are emitted in the Lyman series as hydrogen atoms undergo transitions from various excited states to the ground state. If ground-state He+ are present in the same gas (near stars, for example), can they absorb these photons? Explain.arrow_forward6.99 The photoelectric effect can he used in engineering designs for practical applications. For example, infrared goggles used in night-vision applications have materials that give an electrical signal with exposure to the relatively long wavelength IR light. If the energy needed for signal generation is 3.51020J , what is the wavelength and frequency of light that barely can be detected?arrow_forward
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