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

a) 1.55 kg = 1.55 * $10^{3}$ g b) 642 g = 0.642 kg c) 2896 mm = 289.6 cm d) 0.086 cm = 0.86 mm
a) From kg to g is 3 units smaller. So one has to multiply the number in kg with 1000 to convert it into g. 1.55 kg = 1.55 * 1000 g = 1.55 * $10^{3}$ g b) From g to kg is 3 units bigger. So one has to divide the number in g by 1000 to convert it into kg. 642 g = 642 / 1000 kg = 0.642 kg c) From mm to cm is 1 unit bigger. So one has to divide the number in mm by 10 to convert in into cm. 2896 mm = 2896 / 10 cm= 289.6 cm d) From cm to mm is 1 unit smaller. So one has to multiply the number in cm with 10 to convert it into mm. 0.086 cm = 0.086 * 10 mm = 0.86 mm