1 km 10 3 m 1 mi 1760 yd 1 m 10 2 cm centimeters 1 in

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1 km = 10 3 m 1 mi = 1760 yd 1 m = 10 2 cm (centimeters) 1 in = 2.54 cm (exact) 1 m = 10 3 mm (millimeters) 1 Å = 10 -10 m 1 ft = 12 in Mass 1 kg = 2.205 lb 1 lb = 453.6 g 1 oz (ounce) = 28.35 g 1 amu = 1.6605 x 10 -27 kg Volume 1 L = 1000 mL = 1.06 qt 1 ft 3 = 28.32 L 1 mL = 1 cm 3 = 0.03381 oz 1 gal = 3.785412 L = 4 qt Pressure 1 atm = 760. mmHg 1 torr = 1 mmHg 1 atm = 14.6959 lb/in 2 (psi) 1 atm = 101,325 Pa 1 Pa = 1 N/m 2 1 bar = 100 kPa Energy 1 eV = 1.602 x 10 -19 J 1 cal = 4.184 J (exact) Force 1 N = 0.22481 lb Compound Units: Newton (N): 1 N = 1 kg · m/s 2 Joule (J): 1 J = 1 N · m = kg · m 2 /s 2 Physical Constants: mass of electron 0.000549 amu mass of proton 1.00728 amu mass of neutron 1.00867 amu Avogadro’s Number (N A ) 6.0221367 x 10 23 speed of light 2.99792 x 10 8 m/s acceleration due to gravity 9.80665 m/s 2 Formulae: M 1 V 1 = M 2 V 2 Percent yield = Actual Yield/Theoretical Yield * 100% Molarity = mol/L Density = mass/volume
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