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A certain metal has n = 1.70 × 1028 conduction electrons per cubic meter. A certain...

A certain metal has n = 1.70 × 1028 conduction electrons per cubic meter. A certain sample of that metal has a volume of V = 6.02 × 10-6 m3 and a temperature of T = 202 K. How many occupied states are in the energy range of ?E = 3.20 × 10-20 J that is centered on the energy E = 4.00 × 10-19 J? (Caution: Avoid round-off in the exponential.)

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