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DE Chemistry: King William High School Length (meter – m) Volume (liter – L) Mass (grams – g) Temperature (degrees Celsius - oC) Time (seconds – s) mega (m) = 1 x 106 base units kilo (k) = 1000 base units deci (d) 1 g = 10 dg centi (c) 1 g = 100 cg milli (m) 1 g = 1000 mg micro (u) 1 g = 1 x 106 ug nano (n) 1 g = 1 x 109 ng pico (p) 1 g = 1 x 1012 pg The average pencil, new and unused, is 19 cm long. What is its length in millimeters? Meters? Inches? Road signs in Germany advise motorists to drive no faster than 130.0 km/hr. What is this speed in feet per second? A standard US postage stamp is 2.5 cm long and 2.1 cm wide. What is the area of the stamp in m2? The directions of an experiment call for you to use 676 mL of a solution. What is this volume in centimeters cubed? In nanoliters? K = oC + 273 oC oF (multiply by 9, divide by 5, add 32) oC (9/5) + 32 = oF EX: Convert 26oC to Fahrenheit. oF oC (deduct 32, multiply by 5, divide by 9) (oF - 32)(5/9) = oC EX: Convert 98.6 oF to Celsius. 0.025 1,000 2.6 x 10-4 8.7 x103 Rules listed on page 28 6.75 304 12.60 3.6400 x 102 0.009 7,000 104.45 mL + 0.838 mL + 46 mL = 24.568 g – 14.25 g = 45.7 x 0.034 = 34.56/1.25 = D = m/v EX: What is the density of a metal sample with a mass of 514.2 g and a volume of 114 cm3? What is the mass of a glucose solution that fills an IV bottle with a volume of 0.500 L? The density of the solution is 1.15 g/mL?