Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243


Chapter 9, Problem 67E
Textbook Problem

The band gap in aluminum phosphide (AlP) is 2.5 electronvolts (1 eV = 1.6 × 10−19 J). What wavelength of light is emitted by an AlP diode?

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Chapter 9 Solutions

Chemistry: An Atoms First Approach
Ch. 9 - It is possible to balance a paper clip on the...Ch. 9 - Consider a sealed container half-filled with...Ch. 9 - Explain the following: You add 100 mL water to a...Ch. 9 - Is it possible for the dispersion forces in a...Ch. 9 - Does the nature of intermolecular forces change...Ch. 9 - Why do liquids have a vapor pressure? Do all...Ch. 9 - Water in an open beaker evaporates over time. As...Ch. 9 - What is the vapor pressure of water at 100C? How...Ch. 9 - Refer to Fig. 9-41. Why doesnt temperature...Ch. 9 - Which are stronger, intermolecular or...Ch. 9 - Why does water evaporate?Ch. 9 - Rationalize why chalk (calcium carbonate) has a...Ch. 9 - In the diagram below, which lines represent the...Ch. 9 - Hydrogen bonding is a special case of very strong...Ch. 9 - Atoms are assumed to touch in closest packed...Ch. 9 - Define critical temperature and critical pressure....Ch. 9 - Use the kinetic molecular theory to explain why a...Ch. 9 - Will a crystalline solid or an amorphous solid...Ch. 9 - What is an alloy? Explain the differences in...Ch. 9 - Describe what is meant by a dynamic equilibrium in...Ch. 9 - How does each of the following affect the rate of...Ch. 9 - A common response to hearing that the temperature...Ch. 9 - When a person has a severe fever, one therapy used...Ch. 9 - Why is a burn from steam typically much more...Ch. 9 - When wet laundry is hung on a clothesline on a...Ch. 9 - Cake mixes and other packaged foods that require...Ch. 9 - You have three covalent compounds with three very...Ch. 9 - Compare and contrast the structures of the...Ch. 9 - Compare and contrast the structures of the...Ch. 9 - Silicon carbide (SiC) is an extremely hard...Ch. 9 - How could you tell experimentally if TiO2 is an...Ch. 9 - A common prank on college campuses is to switch...Ch. 9 - A plot of In (Pvap) versus 1/T (K) is linear with...Ch. 9 - Iodine, like most substances, exhibits only three...Ch. 9 - Identify the most important types of interparticle...Ch. 9 - Identify the most important types of interparticle...Ch. 9 - Predict which substance in each of the following...Ch. 9 - Consider the compounds CI2, HCI. F2, NaF, and HF....Ch. 9 - Rationalize the difference in boiling points for...Ch. 9 - Consider the following electrostatic potential...Ch. 9 - In each of the following groups of substances,...Ch. 9 - In each of the following groups of substances,...Ch. 9 - The shape of the meniscus of water in a glass tube...Ch. 9 - Explain why water forms into beads on a waxed car...Ch. 9 - Hydrogen peroxide (H2O2) is a syrupy liquid with a...Ch. 9 - Carbon diselenide (CSe2) is a liquid at room...Ch. 9 - X rays from a copper X-ray tube ( = 154 pm) were...Ch. 9 - The second-order diffraction (n = 2) for a gold...Ch. 9 - A topaz crystal has an interplanar spacing (d) of...Ch. 9 - X rays of wavelength 2.63 were used to analyze a...Ch. 9 - Calcium has a cubic closest packed structure as a...Ch. 9 - Nickel has a face-centered cubic unit cell. The...Ch. 9 - A certain form of lead has a cubic closest packed...Ch. 9 - Iridium (Ir) has a face-centered cubic unit cell...Ch. 9 - You are given a small bar of an unknown metal X....Ch. 9 - A metallic solid with atoms in a face-centered...Ch. 9 - Titanium metal has a body-centered cubic unit...Ch. 9 - Barium has a body-centered cubic structure. If the...Ch. 9 - The radius of gold is 144 pm, and the density is...Ch. 9 - The radius of tungsten is 137 pm and the density...Ch. 9 - What fraction of the total volume of a cubic...Ch. 9 - Iron has a density of 7.86 g/cm3 and crystallizes...Ch. 9 - Explain how doping silicon with either phosphorus...Ch. 9 - Explain how a pn junction makes an excellent...Ch. 9 - Selenium is a semiconductor used in photocopying...Ch. 9 - The Group 3A/Group 5A semiconductors are composed...Ch. 9 - The band gap in aluminum phosphide (AlP) is 2.5...Ch. 9 - An aluminum antimonide solid-state laser emits...Ch. 9 - The structures of some common crystalline...Ch. 9 - The unit cell for nickel arsenide is shown below....Ch. 9 - Cobalt fluoride crystallizes in a closest packed...Ch. 9 - The compounds Na2O, CdS, and ZrI4. all can be...Ch. 9 - What is the formula for the compound that...Ch. 9 - Assume the two-dimensional structure of an ionic...Ch. 9 - A certain metal fluoride crystallizes in such a...Ch. 9 - The structure of manganese fluoride can be...Ch. 9 - The unit cell of MgO is shown below l Does MgO...Ch. 9 - In solid KCl the smallest distance between the...Ch. 9 - The CsCl structure is a simple cubic array of...Ch. 9 - MnO has either the NaCI type structure or the CsCI...Ch. 9 - What type of solid will each of the following...Ch. 9 - What type of solid will each of the following...Ch. 9 - The memory metal, nitinol, is an alloy of nickel...Ch. 9 - Superalloys have been made of nickel and aluminum....Ch. 9 - Perovskite is a mineral containing calcium,...Ch. 9 - A mineral crystallizes in a cubic closest packed...Ch. 9 - Materials containing the elements Y, Ba, Cu, and O...Ch. 9 - The structures of another class of ceramic,...Ch. 9 - Plot the following data and determine Hvap for...Ch. 9 - From the following data for liquid nitric acid,...Ch. 9 - In Breckenridge, Colorado, the typical atmospheric...Ch. 9 - The temperature inside a pressure cooker is 115C....Ch. 9 - Carbon tetrachloride, CCI4, has a vapor pressure...Ch. 9 - Diethyl ether (CH3CH2OCH2CH3) was one of the first...Ch. 9 - A substance, X, has the following properties:...Ch. 9 - Use the heating-cooling curve below to answer the...Ch. 9 - The molar heat of fusion of sodium metal is 2.60...Ch. 9 - The molar heat of fusion of benzene (C6H6) is 9.92...Ch. 9 - What quantity of energy does it take to convert...Ch. 9 - Consider a 75.0-g sample of H2O(g) at 125C. What...Ch. 9 - An ice cube tray contains enough water at 22.0C to...Ch. 9 - A 0.250-g chunk of sodium metal is cautiously...Ch. 9 - Consider the phase diagram given below. What...Ch. 9 - Sulfur exhibits two solid phases, rhombic and...Ch. 9 - Use the accompanying phase diagram for carbon to...Ch. 9 - Like most substances, bromine exists in one of the...Ch. 9 - The melting point of a fictional substance X is...Ch. 9 - Consider the following data for xenon: Triple...Ch. 9 - Some of the physical properties of H2O and D2O are...Ch. 9 - Rationalize the following boiling points:Ch. 9 - Consider the following vapor pressure versus...Ch. 9 - Consider the following enthalpy changes:...Ch. 9 - The unit cell for a pure xenon fluoride compound...Ch. 9 - Boron nitride (BN) exists in two forms. The first...Ch. 9 - Consider the following data concerning four...Ch. 9 - Argon has a cubic closest packed structure as a...Ch. 9 - Dry nitrogen gas is bubbled through liquid benzene...Ch. 9 - A 20.0-g sample of ice at 10.0C is mixed with...Ch. 9 - In regions with dry climates, evaporative coolers...Ch. 9 - The critical point of NH3 is 132C and 111 atm, and...Ch. 9 - Which of the following compound(s) exhibit only...Ch. 9 - Which of the following statements about...Ch. 9 - Which of the following statements is( are) true?...Ch. 9 - Aluminum has an atomic radius of 143 pm and forms...Ch. 9 - Pyrolusite is a mineral containing manganese ions...Ch. 9 - The structure of the compound K2O is best...Ch. 9 - What type of solid (network, metallic, Group 8A,...Ch. 9 - Some ice cubes at 0c with a total mass of 403 g...Ch. 9 - The enthalpy of vaporization for acetone is 32.0...Ch. 9 - Choose the statements that correctly describe the...Ch. 9 - When I mole of benzene is vaporized at a constant...Ch. 9 - You and a friend each synthesize a compound with...Ch. 9 - Using the heats of fusion and vaporization for...Ch. 9 - Consider a perfectly insulated and sealed...Ch. 9 - Consider two different organic compounds, each...Ch. 9 - Rationalize the differences in physical properties...Ch. 9 - Consider the following melting point data:...Ch. 9 - Some ionic compounds contain a mixture of...Ch. 9 - Some ionic compounds contain a mixture of...Ch. 9 - Spinel is a mineral that contains 37.9% aluminum,...Ch. 9 - Mn crystallizes in the same type of cubic unit...Ch. 9 - You are asked to help set up a historical display...Ch. 9 - Some water is placed in a sealed glass container...Ch. 9 - The molar enthalpy of vaporization of water at 373...Ch. 9 - For a simple cubic array, solve for the volume of...Ch. 9 - Rubidium chloride has the sodium chloride...Ch. 9 - A 0.132-mole sample of an unknown semiconducting...Ch. 9 - A metal burns in air at 600c under high pressure...Ch. 9 - One method of preparing elemental mercury involves...Ch. 9 - General Zod has sold Lex Luthor what Zod claims to...

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