General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Some oxide superconductors adopt a crystal structure similar to that of perovskite (CaTiO3). The unit cell is cubic with a Ti4+ ion in each corner, a Ca2+ ion in the body center, and O2- ions at the midpoint of each edge. (a) Is this unit cell simple, body-centered, or face-centered? (b) If the unit cell edge length is 3.84 Å, what is the density of perovskite (in g/cm3)?
Gallium has an orthorhombic structure,
with a0 = 0.45258 nm, b0 = 0.45186 nm,
and c0 = 0.76570 nm. The atomic radius
is 0.1218 nm. The density is 5.904 g
cm3, and the atomic weight is 69.72 g
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unit cell.
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Chapter 10 Solutions
General Chemistry: Atoms First
Ch. 10.1 - The dipole moment of HF is = 1.83 D, and the bond...Ch. 10.1 - Prob. 10.2PCh. 10.1 - Prob. 10.3CPCh. 10.1 - Prob. 10.4CPCh. 10.2 - Prob. 10.5PCh. 10.2 - Prob. 10.6PCh. 10.4 - Prob. 10.7PCh. 10.4 - Chloroform (CHCl3) has Hvap = 29.2 kJ/mol and Svap...Ch. 10.5 - Prob. 10.9PCh. 10.5 - Prob. 10.10P
Ch. 10.8 - Prob. 10.11PCh. 10.8 - Prob. 10.12PCh. 10.8 - Prob. 10.13PCh. 10.8 - Prob. 10.14CPCh. 10.9 - Prob. 10.15PCh. 10.9 - Prob. 10.16CPCh. 10.11 - Prob. 10.17PCh. 10.11 - Prob. 10.18PCh. 10.11 - Prob. 10.19CPCh. 10.11 - Prob. 10.20PCh. 10.11 - Prob. 10.21PCh. 10 - Prob. 10.22CPCh. 10 - Prob. 10.23CPCh. 10 - Zinc sulfide, or sphalerite, crystallizes in the...Ch. 10 - Perovskite, a mineral containing calcium, oxygen,...Ch. 10 - Prob. 10.26CPCh. 10 - Prob. 10.27CPCh. 10 - Prob. 10.28CPCh. 10 - Prob. 10.30CPCh. 10 - Prob. 10.31CPCh. 10 - Why dont all molecules with polar covalent bonds...Ch. 10 - Prob. 10.33SPCh. 10 - Prob. 10.34SPCh. 10 - Prob. 10.35SPCh. 10 - Methanol (CH3OH; bp = 65 C) boils nearly 230 C...Ch. 10 - Prob. 10.37SPCh. 10 - Which of the following substances would you expect...Ch. 10 - Prob. 10.39SPCh. 10 - Prob. 10.40SPCh. 10 - The dipole moment of ClF is 0.887 D and the...Ch. 10 - Prob. 10.42SPCh. 10 - Prob. 10.43SPCh. 10 - The class of ions PtX42, where X is a halogen, has...Ch. 10 - Prob. 10.45SPCh. 10 - Prob. 10.46SPCh. 10 - Prob. 10.47SPCh. 10 - Prob. 10.48SPCh. 10 - Prob. 10.49SPCh. 10 - Prob. 10.50SPCh. 10 - Prob. 10.51SPCh. 10 - Mercury has mp = 38.8 C and bp = 356.6 C. What, if...Ch. 10 - Prob. 10.53SPCh. 10 - Prob. 10.54SPCh. 10 - Prob. 10.55SPCh. 10 - Prob. 10.56SPCh. 10 - Prob. 10.57SPCh. 10 - Prob. 10.58SPCh. 10 - How much energy in kilojoules is released when...Ch. 10 - Draw a molar heating curve for ethanol, C2H5OH,...Ch. 10 - Prob. 10.61SPCh. 10 - Prob. 10.62SPCh. 10 - Prob. 10.63SPCh. 10 - Prob. 10.64SPCh. 10 - Prob. 10.65SPCh. 10 - Prob. 10.66SPCh. 10 - Prob. 10.67SPCh. 10 - Prob. 10.68SPCh. 10 - Prob. 10.69SPCh. 10 - Prob. 10.70SPCh. 10 - Prob. 10.71SPCh. 10 - Prob. 10.72SPCh. 10 - Prob. 10.73SPCh. 10 - Prob. 10.74SPCh. 10 - Prob. 10.75SPCh. 10 - Prob. 10.76SPCh. 10 - Which of the substances diamond, Hg, Cl2, glass,...Ch. 10 - Prob. 10.78SPCh. 10 - Prob. 10.79SPCh. 10 - Prob. 10.80SPCh. 10 - Prob. 10.81SPCh. 10 - Prob. 10.82SPCh. 10 - Prob. 10.83SPCh. 10 - Prob. 10.84SPCh. 10 - Prob. 10.85SPCh. 10 - Prob. 10.86SPCh. 10 - Prob. 10.87SPCh. 10 - Prob. 10.88SPCh. 10 - Sodium has a density of 0.971 g/cm3 and...Ch. 10 - Prob. 10.90SPCh. 10 - Prob. 10.91SPCh. 10 - Prob. 10.92SPCh. 10 - Prob. 10.93SPCh. 10 - Prob. 10.94SPCh. 10 - Prob. 10.95SPCh. 10 - Look at the phase diagram of CO2 in Figure 10.29,...Ch. 10 - Prob. 10.97SPCh. 10 - Prob. 10.98SPCh. 10 - Prob. 10.99SPCh. 10 - Prob. 10.100SPCh. 10 - Prob. 10.101SPCh. 10 - Does solid oxygen (Problem 10.99) melt when...Ch. 10 - Prob. 10.103SPCh. 10 - Prob. 10.104SPCh. 10 - Prob. 10.105SPCh. 10 - Prob. 10.106SPCh. 10 - Prob. 10.107SPCh. 10 - Prob. 10.108CHPCh. 10 - Prob. 10.109CHPCh. 10 - Prob. 10.110CHPCh. 10 - Prob. 10.111CHPCh. 10 - Prob. 10.112CHPCh. 10 - Prob. 10.113CHPCh. 10 - Prob. 10.114CHPCh. 10 - Prob. 10.115CHPCh. 10 - Magnesium metal has Hfusion = 9.037 kJ/mol and...Ch. 10 - Prob. 10.117CHPCh. 10 - Prob. 10.118CHPCh. 10 - Prob. 10.119CHPCh. 10 - Prob. 10.120CHPCh. 10 - Prob. 10.121CHPCh. 10 - Prob. 10.122CHPCh. 10 - Prob. 10.123CHPCh. 10 - Calculate the percent volume occupied by the...Ch. 10 - Prob. 10.125CHPCh. 10 - Prob. 10.126CHPCh. 10 - Prob. 10.127CHPCh. 10 - A drawing of the NaCl unit cell is shown in Figure...Ch. 10 - Niobium oxide crystallizes in the following cubic...Ch. 10 - Prob. 10.130CHPCh. 10 - One form of silver telluride (Ag2Te) crystallizes...Ch. 10 - Prob. 10.132CHPCh. 10 - Prob. 10.133MPCh. 10 - Prob. 10.134MPCh. 10 - A group 3A metal has a density of 2.70 g/cm3 and a...Ch. 10 - Prob. 10.136MP
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- At room temperature, the edge length of the cubic unit cell in elemental silicon is 5.431 Å, and the density of silicon at the same temperature is 2.328 g cm-3 . Each cubic unit cell contains eight silicon atoms. Using only these facts, perform the following operations.(a) Calculate the volume (in cubic centimeters) of one unit cell.(b) Calculate the mass (in grams) of silicon present in a unit cell.(c) Calculate the mass (in grams) of an atom of silicon.(d) The mass of an atom of silicon is 28.0855 u. Estimate Avogadro’s number to four significant figures.arrow_forward(a) Pure iron has a change in crystal structure from BCC to FCC when heating up above 912°C. If the atomic radius of an Fe atom is 0.124 nm, calculate the volumes of the FCC and BCC unit cells. (b)Recall that there are two atoms per BCC unit cell, and four atoms per FCC unit cell. With this information in mind, calculate the percent change in volume of a sample of pure Fe as it transforms from an FCC to a BCC structure upon cooling below 912°C. Specify if this percent change manifests as an increase or decrease in volume of the sample.arrow_forwardA cubic unit cell contains manganese ions at the corners and fluoride ions at the center of each edge.(a) What is the empirical formula of this compound? Explain your answer.(b) What is the coordination number of the Mn3+ ion?(c) Calculate the edge length of the unit cell if the radius of a Mn3+ ion is 0.65 A.(d) Calculate the density of the compound.arrow_forward
- Crystal structure of Alo.5Gao.5AS Based on the zincblende crystal structure for GaAs, sketch the structure of Alo.sGao.5As. The lattice constant for Alo.sGao.5As is a = 5.653 Å. (a) Calculate the atomic density per unit volume for Alo.5Gao.5As. (b) What is the atomic density per unit area on the (100) and (110) planes? (c) The atomic radii for Al, Ga, and As are, respectively, 1.25 Å, 1.30 Å, and 1.15 Å. Using the hard-sphere model, estimate the lattice constant for Alo.5GA0.5As and compare the result with the value given above.arrow_forward1.Indium has a tetragonal unit cell for which the a and c lattice parameters are 0.459 and 0.495 nm, respectively. (a) If the atomic packing factor and atomic radius are 0.693 and 0.1625 nm, respectively, determine the number of atoms in each unit cell. (b) The atomic weight of indium is 114.82 g/mol; compute its theoretical density.arrow_forwardA metal crystallizes in the face-centered cubic crystal structure with a unit cell edge of 3.52 x 10 -8 cm.The density of the metal is 8.90 g/cc. (a) What is the mass, in grams, of a single atom of this element? (b) What is the atomic weight of the element (g/mol). (c) What is the radius, in cm, of an atom of the element?arrow_forward
- For the shown crystal structure, write down (a) the Bravais lattice and (b) the basis of the primitive unit cell. For this structure a=b= c and a=B=y%3D90°. The green (A) atoms at the vertices; blue (B) atom at the center, pink (C) atoms are the centers of two opposite faces; and brown (D) atoms at the centers of four edges of the unit cell. Note that the a, b and c translation vectors are along the positive x, y and z axes, respectively, as shown. CODarrow_forwardSodium oxide (Na2O) adopts a cubic structure with Na atomsrepresented by green spheres and O atoms by red spheres. (a) How many atoms of each type are there in the unit cell?(b) Determine the coordination number and describe theshape of the coordination environment for the sodiumion.(c) The unit cell edge length is 5.550 Å. Determine the densityof Na2O.arrow_forward1) Palladium (electron configuration is [Kr]4d¹) crystallizes in a face-centered cubic unit cell. its density is 12.0 g/cm³. (NA = 6.02 x 10²³) (a) What is the total mass of palladium atoms contained within one unit cell? (b) Calculate the atomic radius (r) of Pd.arrow_forward
- Iodine has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.479, 0.725, and 0.978 nm, respectively. (a) If the atomic packing factor and atomic radius are 0.547 and 0.177 nm, respectively, determine the number of atoms in each unit cell. (b) The atomic weight of iodine is 126.91 g/mol; compute its theoretical density.arrow_forward(b) Many structures of ionic compounds have been described in terms of close packing of a large anion, X, with a cation, A, occupying tetrahedral or octahedral holes. (1) In a cubic close packed lattice, how many octahedral holes are there per lattice ion? (ii) What is the formula of a compound based upon a cubic close packed lattice in which of the octahedral holes are filled? (ii) State the coordination numbers and geometries of A and X In the crystal lattice in part (b)(ii) above.arrow_forwardIron titanate, FeTiO3, forms in the ilmenite crystal structure that consists of an HCP arrangement of O2- ions. (a) Which type of interstitial site will the Fe2+ ions occupy? (b) Which type of interstitial site will the Ti4+ ions occupy? (c) What fraction of the total tetrahedral sites will be occupied? (In decimal form to two places to the right of the decimal) (d) What fraction of the total octahedral sites will be occupied? (In decimal form to two places to the right of the decimal)arrow_forward
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