Approximately how many states in the range from 5.0 eV to 5.2 eV are there in a copper bar of volume 5.3 cm3?
(h = 6.626 × 10-34 J ? s, h = 1.055 × 10-34 J ? s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J)
A) 1.6 × 1022 B) 5.1 × 1022 C) 3.2 × 1022 D) 8.2 × 1021 E) 3.2 × 1021
A
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