# CHE and PHY Math

 Celsius equation for Fahrenheit °C= 5/9 (°F-32 Celsius equation for Kelvin °C= K-273 Basic Units of Measurement Mass ⇨  gramsDistance ⇨ metersVolume ⇨ liters Area equation Area= distance × distance Volume equation Volume= length × width × height Density equation Density= mass                          volume Mega- Abbreviation: MPower of 10: 106 Kilo- 1000Abbreviation: K Power of 10: K3 Deci- 0.1Abbreviation: DPower of 10: 10-1 Centi- 0.01Abbreviation: CPower of 10: 10-2 Milli- 0.001Abbreviation: mPower of 10: 10-3 Micro- 0.000001Abbreviation: μPower of 10: 10-6 Nano- 0.000000001Abbreviation: NPower of 10: 10-9 Density equation density= mass              volume 1 Km=m? 1000m Useful units of conversion 1 inch = 2.54 cm1 foot = 0.305 m1 mile = 1.609 km1 mph = 0.447 m/s1 m = 39.37 in1 km = 0.621 miles1 m/s = 2.24 mph Common SI Units Quantity:     Unit:         Abbreviation: time            second      s length         meter        m mass           kilogram    kg 1 Mile=ft.? 5280 ft. 1 ft.=inch? 12 inches 1 yard=ft.? 3 ft. 1 yard=in.? 36 inches 1 L= mL? 1,000 Milliliters 1 cm3=mL?  (cubic centimeter) 1 mL 1 dm3=L?  (cubic decimeter) 1 Liter 1 pound= g? 454 grams 1m=in.? 39.37 inches 1 m/s=mph? 2.24mph Atomic mass unit abbreviation "u" = 1.661  X 10-10 What is Avogrado's number? (represents number of atoms or molecules in an element or compound) 6.022 X 1023 1mol= weight of? atomic weight (g) on periodic table To find # of atoms/molecules use? Avogrado's number6.022 X 1023 Equation to find mass percent? mass of element in compound  mass of total compound   Multiplied by 100 Authorswitch2002 ID231201 Card SetCHE and PHY Math Descriptionmath Updated2013-09-01T19:30:18Z Show Answers