## General Chemistry: Principles and Modern Applications (10th Edition)

a) $3.21\times10^{-2}$ Replace the comma two places to the left, so the decimal notation is 0.0321 b) $5.08\times10^{-4}$ Replace the comma four places to the left, so the decimal notation is 0.000508 c) $121.9\times10^{-5}$ Replace the comma five places to the left, so the decimal notation is 0.001219 d) $16.2\times10^{-2}$ Replace the comma two places to the left, so the decimal notation is 0.162