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1.3 Convert each of the following values to scientific notation. (a) 29,500 (b) 0.000082 (c) 650,000,000 (d) 0.0100 1.4 Convert each of the following values to scientific notation. (a) 0.00010 (b) 4500 (c) 90,100,000 (d) 0.0000079 1.5 Convert each of the following values from scientific notation to decimal form. (a) 1.86 × 10−5 (b) 1 × 107 (c) 4.53 × 105 (d) 6.1 × 10−3 1.7 For each of the following, carry out the mathematical operation and report answers in scientific notation. (a) (3.1 × 105) × (2.0 × 10−2) (b) (7.0 × 109) ÷ (2.0 × 102) (c) (2.8 × 10−4) ÷ (9.6 × 10−2) (d) (5.0 × 10−4)2 (e) (8.50 × 105) − (3.0 × 104) (f) (6.4 × 10−3) ÷ (4.0 × 103) 1.9 Determine the number of significant figures in the following. (a) 0.0950 (b) 760 (c) 1.005 (d) 0.0052 (e) 3.46 × 1015 1.10 Determine the number of significant figures in the following. (a) 1.48 × 10−2 (b) 156.0 (c) 0.04350 (d) 70.25 (e) 140 1.11 Express the answers to the following operations with the proper number of significant figures. (a) 1.2 × 1.216 (b) 3.000/2.0 (c) (1.201 × 103) × (1.2 × 10−2) (d) (1.44)1/2 1.12 Express the answers to the following operations with the proper number of significant figures. (a) (1.600 × 10−7)(2.1 × 103) (b) (1.33)3 (c) 1.93 × 2.651 (d) 4.4/2.200 1.19 Carry out the following conversions. Report your answers to the correct number of significant figures. (a) 36 mm to m (b) 357 kg to g (c) 76.50 mL to L (d) 0.0084670 m to cm (e) 597 nm to m (f) 36.5 in to cm (g) 168 lb to g (h) 914 qt to L (i) 44.5 cm to in (j) 236.504 g to lb (k) 2.0 L to qt 1.24 Carry out the following conversions. Report your answers to the correct number of significant figures. (a) 27 ft/s to cm/min (b) 2764 ft3 to m3 (c) 0.927 g/mL to lb/gal 1.49 Classify each of the following as an element or a compound. a) O2 b) Fe2O3 (c) P4 (d) He (e) NaCl (f) H2O 1.96 The average density of human blood is 1060 kg/m3. What is the mass of blood in a person who has a blood volume of 0.00500 m3? Report your answer in units of kilograms and in units of pounds. 1.150 A rectangular block of an unknown metal with a mass of 456 g is measured to have a length, width, and height of 10.2 cm, 5.08 cm, and 3.26 cm, respectively. What is the likely identity of the metal? A. zinc, density = 7.14 g/cm3 B. lead, density = 11.3 g/cm3 C. aluminum, density = 2.70 g/cm3 D. nickel, density = 8.91 g/cm3 E. titanium, density = 4.51 g/cm3 What would be the masses of the same size blocks of the other metals?