Answered: 1.Vanadium crystallizes in a…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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1.Vanadium crystallizes in a body-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. What is the density of V? The atomic mass of V is 50.94 amu.

a.5.96 g cm^-3

b.2.98 g cm^-3

c.5.96 x 10^-30 g cm^-3

d.2.98 x 10^-6 g cm^-32.Given the following data, calculate the lattice energy of aluminum oxide, Al₂O₃.

a.-13 272 kJ mol^-1b.-8300 kJ mol^-1c.-15 333 kJ mol^-1d. -10 610 kJ mol^-1

IEA = 577.5 kJ mol1
IE = 1817 kJ mol1
IEX = 2745 kJ mol1
AHSub(Al) = 330 kJ mol1
EA = 141 kJ mol1
EA3 = -798 kJ mol1
BDE (O = O) = 498 kJ mol
AH(Al,O3) = -1675.7 kJ mol1
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