## General Chemistry (4th Edition)

(a) 21.5 cm = 0.215 m (b) 7.56 × $10^{-6}$ m = 7.56 µm (c) 1.2 × $10^{-6}$ mg = 120 pg (d) 15 000 000 kilobytes = 15 gigabytes (e) 6.67 mm$^{3}$ = 0.00667 cm$^{3}$