Chemistry: An Atoms First Approach
2nd Edition
ISBN: 9781305079243
Author: Steven S. Zumdahl, Susan A. Zumdahl
Publisher: Cengage Learning
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Chapter 9, Problem 119AE
In regions with dry climates, evaporative coolers are used to cool air. A typical electric air conditioner is rated at 1.00 × 104 Btu/h (1 Btu, or British thermal unit = amount of energy to raise the temperature of 1 lb water by 1°F). What quantity of water must be evaporated each hour to dissipate as much heat as a typical electric air conditioner?
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Which one of the following statements explain why protecting groups are referred to as “a necessary evil in organic synthesis”?
Question 12Select one or more:
A.
They increase the length and cost of the synthesis
B.
Every synthesis employs protecting groups
C.
Protecting group have no role to play in a synthesis
D.
They minimize the formation of side products
Chapter 9 Solutions
Chemistry: An Atoms First Approach
Ch. 9 - What are intermolecular forces? How do they differ...Ch. 9 - Define the following terms and describe how each...Ch. 9 - Compare and contrast solids, liquids, and gases.Ch. 9 - Prob. 4RQCh. 9 - What is a lattice? What is a unit cell? Describe a...Ch. 9 - What is closest packing? What is the difference...Ch. 9 - Describe, in general, the structures of ionic...Ch. 9 - Prob. 9RQCh. 9 - Prob. 10RQCh. 9 - Compare and contrast the phase diagrams of water...
Ch. 9 - It is possible to balance a paper clip on the...Ch. 9 - Prob. 2ALQCh. 9 - Prob. 3ALQCh. 9 - Prob. 4ALQCh. 9 - Prob. 5ALQCh. 9 - Prob. 6ALQCh. 9 - Prob. 7ALQCh. 9 - Prob. 8ALQCh. 9 - Prob. 9ALQCh. 9 - Prob. 10ALQCh. 9 - Prob. 11ALQCh. 9 - Prob. 12QCh. 9 - In the diagram below, which lines represent the...Ch. 9 - Prob. 14QCh. 9 - Atoms are assumed to touch in closest packed...Ch. 9 - Define critical temperature and critical pressure....Ch. 9 - Prob. 17QCh. 9 - Prob. 18QCh. 9 - Prob. 19QCh. 9 - Prob. 20QCh. 9 - Prob. 21QCh. 9 - A common response to hearing that the temperature...Ch. 9 - Prob. 23QCh. 9 - Prob. 24QCh. 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 - Prob. 28QCh. 9 - Compare and contrast the structures of the...Ch. 9 - Prob. 30QCh. 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 - Prob. 34QCh. 9 - Identify the most important types of interparticle...Ch. 9 - Prob. 36ECh. 9 - Predict which substance in each of the following...Ch. 9 - Consider the compounds CI2, HCI. F2, NaF, and HF....Ch. 9 - Prob. 39ECh. 9 - Consider the following electrostatic potential...Ch. 9 - In each of the following groups of substances,...Ch. 9 - Prob. 42ECh. 9 - The shape of the meniscus of water in a glass tube...Ch. 9 - Prob. 44ECh. 9 - Prob. 45ECh. 9 - Prob. 46ECh. 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 - Prob. 51ECh. 9 - Prob. 52ECh. 9 - Prob. 53ECh. 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 - Prob. 63ECh. 9 - Prob. 64ECh. 9 - Selenium is a semiconductor used in photocopying...Ch. 9 - Prob. 66ECh. 9 - Prob. 67ECh. 9 - Prob. 68ECh. 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 - Prob. 74ECh. 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 - Prob. 81ECh. 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 - Prob. 91ECh. 9 - Prob. 92ECh. 9 - Prob. 93ECh. 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 - Prob. 98ECh. 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 - Prob. 103ECh. 9 - Prob. 104ECh. 9 - Prob. 105ECh. 9 - Prob. 106ECh. 9 - Prob. 107ECh. 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 - Prob. 111AECh. 9 - Consider the following enthalpy changes:...Ch. 9 - Prob. 113AECh. 9 - Boron nitride (BN) exists in two forms. The first...Ch. 9 - Prob. 115AECh. 9 - Argon has a cubic closest packed structure as a...Ch. 9 - Prob. 117AECh. 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 - Prob. 123CWPCh. 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 - Prob. 127CWPCh. 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 - Prob. 130CWPCh. 9 - When I mole of benzene is vaporized at a constant...Ch. 9 - Prob. 132CPCh. 9 - Using the heats of fusion and vaporization for...Ch. 9 - Prob. 134CPCh. 9 - Consider two different organic compounds, each...Ch. 9 - Prob. 136CPCh. 9 - Prob. 137CPCh. 9 - Prob. 138CPCh. 9 - Prob. 139CPCh. 9 - Prob. 140CPCh. 9 - Mn crystallizes in the same type of cubic unit...Ch. 9 - Prob. 142CPCh. 9 - Some water is placed in a sealed glass container...Ch. 9 - The molar enthalpy of vaporization of water at 373...Ch. 9 - Prob. 145CPCh. 9 - Rubidium chloride has the sodium chloride...Ch. 9 - Prob. 147IPCh. 9 - A metal burns in air at 600c under high pressure...Ch. 9 - Prob. 149IPCh. 9 - General Zod has sold Lex Luthor what Zod claims to...
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- 5. Calculate the total amount of heat transferred as 50 g of wat Specific heat H₂O (g) 2.00 J/g°C -10 °C. Specific heat H₂O (1) Specific heat H₂O (s) 4.18 J/g°C 2.11 J/g°C Heat of vaporization 2260 J/g Heat of fusion 334 J/g Melting point 0°C 6. Calculate the total amount of heat transferred as 25 g of water is heated from 50 °C to 100 °C as a gas. Boiling point 100 °Carrow_forwardCalculate the total amount of heat transferred as 50 g of Water -10°C. Calculate the total amount of heat transferred as 25 g of water is heated from 50°C to 100°C as a gas. \table[[Specific heat H₂O(g), 2.00°C Η 2 g 5. Calculate the total amount of heat transferred as 50 g of wat Specific heat H₂O (g) 2.00 J/g°C -10 °C. 4.18 J/g°C 2.11 J/g°C 2260 J/g 334 J/g Specific heat H₂O (1) Specific heat H₂O (s) Heat of vaporization Heat of fusion Melting point 6. Calculate the total amount of heat transferred as 25 g of water is heated from 50 °C to 100 °C as a gas. Boiling point 100 °C 0°Carrow_forwardWrite formulas for ionic compounds composed of the following ions. Use units as a guide to your solutions. 24. sodium and nitrate 25. calcium and chlorate 26. aluminum and carbonate 27. CHALLENGE Write the formula for an ionic compound formed by ions from a group 2 element and polyatomic ions composed of only carbon and oxygen.show work step by steparrow_forward
- ADDITIONAL PRACTICE PRACTICE Problems Write formulas for ionic compounds composed of the following ions. Use units as a guide to your solutions. 24. sodium and nitrate 25. calcium and chlorate 26. aluminum and carbonate 27. CHALLENGE Write the formula for an ionic compound formed by ions from a group 2 element and polyatomic ions composed of only carbon and oxygen. ounds 1998arrow_forward7:35 < Dji Question 19 of 22 5G 50% Submit What is the pH of a buffer made from 0.350 mol of HBrO (Ka = 2.5 × 10-9) and 0.120 mol of KBRO in 2.0 L of solution? | 1 2 3 ☑ 4 5 6 C 7 8 ☐ 9 +/- Tap here for additional resources ||| 0 ×10 Гarrow_forwardaw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant rate under these conditions, check the box underneath the drawing area instead. Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products. Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but strong heat or reflux is not used. B C Br HO O Substitution will not occur at a significant rate. Explanation Check + Х Click and drag to start drawing a structure. © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibarrow_forward
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