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Conversion Units English units: (these are exact – no need to worry about sig. figs.) Mass: 16 oz. = 1 lb. 2000 lbs. = 1 ton Volume: 8 fl. oz. = 1 cup Length: 12 in. = 1 ft. 2 cups = 1 pt. 2 pts. = 1 qt. 3 ft = 1 yd. = 36 in. 4 qts. = 1 gal. = 128 fl. oz. 1 mi. = 5280 ft. = 1760 yd. Metric prefixes: 12 tera (T) = 10 -12 pico (p) = 10 nano (n) micro () = 10 -6 = 10 3 milli (m) = 10 2 9 giga (G) = 10 6 mega (M) = 10 -9 -3 kilo (k) = 10 hecto (h) = 10 centi (c) = 10 1 deci (d) = 10 deka (da) = 10 -2 -1 -10 For length: 1 Angstrom A = 10 meter; 1 micrometer is also called a micron (m). is the Greek letter mu Metric-to-English Conversions: 1 lb. = 453.6 grams 1 qt. = 0.946 liters 1 in = 2.54 cm (exactly!) 1 mile = 1.609 km (approx.) Temperature Scales / Conversions: Fahrenheit Celsius Kelvin o o °F = 1.8 C + 32 °C = 5/9(°F - 32) or (°F- 32)/1.8 o Rankine K = 273.15 + C o R = 459.6 + F o point of intersection: - 40 C = -40 F R = 1.8(K) 0K = 0R Fundamental SI Units: Mass Time Length Quantity (Amount of substance) Luminous Intensity Electric current Temperature kilogram (kg) second (s or sec) meter (m) mole (mol) candela (cd) ampere (A or amp) Kelvin (K) Note that volume is a derived unit. The liter and milliliter are not actually recognized as correct units of 3 volume. The accepted volume unit (based on length) is the cubic decimeter. 1dm = 1 liter For volume: 1 cc = 1 cm3 = 1 ml