Assume that the magnetic moment of an aluminum atom is 1 Bohr magneton. The density of aluminum is 2.7 g/cm3, and its molecular mass is 27 g/mol.

(a) Calculate Ms and ?0Ms for aluminum.

(b) Use the results of Problem 71 to calculate ?m at T = 300 K.

(c) Explain why the result for part (b) is larger than the value listed in Table 29-1.

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Magnetic Susceptibility of Materials at 20C Various Material X m 2.3 x 10 5 Aluminum -1.66 x 10-5 Bismuth Copper Diamond -0.98 x 10-5 -2.2 x 10-5 Gold -3.6 x 10-5 1.2 x 10-5 -3.2 x 10-5 Magnesium Mercury Silver -2.6 x 10-5 Sodium -0.24 x 10-5 Titanium 7.06 x 10-5 Tungsten Hydrogen (I atm) 6.8 x 10-5 -9.9 x 10-9 Carbon dioxide (1 -2.3 x 10-9 atm) Nitrogen (1 atm) -5.0 x 10-9 Oxygen (1 atm) 2090 x 10-9