# Chapter 2 - Questions and Problems - Page 76: 2.15

0.12 mi

#### Work Step by Step

1: Calculate radius of atom from radius of nucleus r atom=10000r nucleus which = 10000 (2.0 cm)= 2.0 \times 10^{4} cm 2: Convert centimeters into inches, then inches to feet, then feet into miles. (2.0\times 10^{4}cm)\times (1 in/2.54 cm) \times (1ft/12in) \times (1mi/5280ft)= 0.12 mi

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