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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Aluminum has a density of 2.7 g/cm^3 and crystallizes in a face-centered cubic structure. What is the mass of aluminum in one unit cell?
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- A quantitative measure of how efficiently spheres pack into unit cells is called packing efficiency, which is the percentage of the cell space occupied by the spheres. Calculate the packing efficiency of a body-centered cubic cell. Be sure your answer has the correct number of significant digits. The relationship between the edge length (a) and radius (r) of atoms in a body-centered cubic cell is: a = 4r 3 The packing efficiency of a body-centered cubic cell: % 0x x10 X Śarrow_forward18. Copper crystallizes into a face-centered cubic crystal structure. (a) How many copper atoms are there in one unit cell of copper crystal? (b) If the density of copper is 8.96 g/cm³, what is the edge-length of the unit cell in pm? (c) Calculate the atomic radius of copper in pm. (1 u = 1.6605 x 10-24 g; 1 pm = 10-10 cm) %3D 3arrow_forwardCopper has a face-centered cubic unit cell. The density of copper is 8.96 g/cm3. Calculate a value for the atomic radius of copper.arrow_forward
- A crystalline form of platinum has a density of 21.45 g/cm³. If the radius of platinum atoms is 139.0 pm, what is the platinum unit cell? Choose one: OA simple cubic OB. face-centered cubic OC, body-centered cubic OD. It cannot be determined from the information given.arrow_forwardCalcium has a cubic closest packed structure as a solid. Assuming that calcium has an atomic radius of 197 pm, calculate the density of solid calcium. Density = g/cm³arrow_forward
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