12) What is the best name to describe the shape of water molecule?a. Angularb.C.TetrahedralOctahedrald. Trigonal pyramidal13) Network solids are distinguished from metallic crystals in that:a. Network solids have charged ions, while metallic crystals do not.b. Network solids are composed of molecules, while metallic crystals only have one type of atom.C. Network solids are composed of non-metals.d. Network solids have much lower boiling points.

Question 12: Shape of a Water MoleculeCorrect Answer:{a. Angular}Explanation:Why correct:The oxygen…

Answered: 12) What is the best name to describe…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter14: Liquids And Solids

Section: Chapter Questions

Problem 92AP

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Similar questions

An amorphous solid can sometimes be converted to a crystalline solid by a process called annealing. Annealing consists of heating the substance to a temperature just below the melting point of the crystalline form and then cooling it slowly. Explain why this process helps produce a crystalline solid.
Describe the unit cell of lithium (see Figure).
Silicon carbide, SiC, is a very hard, high-melting solid. What kind of crystal forces account for these properties?
Thallium(I) iodide crystallizes with the same structure a CsCl. The edge length of the Unit cell of TlI is 4.20. Calculate the ionic radius of TI+. (The ionic radius of I is 2.16 .)
NaH crystallizes with the same ciystal structure as NaCl. The edge length of the cubic unit cell of NaH is 4.880. (a) Calculate the ionic radius of H. (The ionic radius of Li+ is 0.0.95 .) (b) Calculate the density of NaH.
Dry ice, CO2(s) , does not melt at atmospheric pressure. It sublimes at a temperature of 78 °C. What is the lowest pressure at which CO2(s) will melt to give CO2(l) ? At approximately what temperature will this occur? (See Figure 10.34 for the phase diagram.)
Lead has a face-centered cubic lattice with all atoms at lattice points and a unit-cell edge length of 495.0 pm. Its atomic mass is 207.2 amu. What is the density of lead?
MnO has either the NaCI type structure or the CsCI type structure (see Exercise 69). The edge length of the MnO unit cell is 4.47 10-8 cm and the density of MnO is 5.28 g/cm3. a. Does MnO crystallize in the NaCl or the CsCl type structure? b. Assuming that the ionic radius of oxygen is 140. pm, estimate the ionic radius of manganese.
Explain why the molar enthalpies of vaporization of the following substances increase in the order CH4C2H6C3H8, even though the type of IMF (dispersion) is the same.
Plot the following data and determine Hvap for magnesium and lithium. In which metal is the bonding stronger? Vapor Pressure (mm Hg) Temperature(C) Li Mg 1 750. 620. 10 890. 740. 100 1080. 900. 400 1240. 1040. 760 1310. 1110.
Describe the crystal structure of iron, which crystallizes with two equivalent metal atoms in a cubic unit cell.
The phase diagram for water over a relative narrow pressure and temperature range is given in Figure 9.19. A phase diagram over a considerably wider range of temperature and pressure (kbar) is given nearby. This phase diagram illustrates the polymorphism of ice, the existence of a solid in more than one form. In this case, Roman numerals are used to designate each polymorphic form. For example, Ice I, ordinary ice, is the form that exists under ordinary pressures. The other forms exist only at higher pressures, in some cases extremely high pressure such as Ice VII and Ice VIII. Using the phase diagram, give the approximate P and T conditions at the triple point for Ice III, Ice V, and liquid water. Determine the approximate temperature and pressure for the triple point for Ices VI, VII, and VIII. What is anomalously different about the fusion curves for Ice VI and Ice VII compared to that of Ice I? What phases exist at 8 kbar and 20 °C? At a constant temperature of −10 °C, start at 3 kbar and increase the pressure to 7 kbar. Identify all the phase changes that occur sequentially as these conditions change. Explain why there is no triple point for the combination of Ice VII, Ice VIII, and liquid water.

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