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Unformatted text preview: Page of 7 CH M 1120 D r. Adams Chap te r 3-I n te r ne t AP P L Y I N G M E A S U R E M E N T S T O C H E M I C A L CA L C U L A T I O N S 3.2 Multiplying Fractions Review the rules for multiplying two fractions. Review sample exercises 3 and 4 on page 64. It is assumed that you are comfortable with these types of calculations. On page 556 there is a review of basic math that may be of value to you if your math skills are rusty. 3.0 1.5 = 3.0 1.5 = 4.5 = .56 2.0 4.0 2.0 4.0 8.0 3.3 Unit Conversion The following are equalities. Although they are expressed using different units, their quantities are the same (similar to 100 pennies being equal to one dollar bill). 1.00 in = 2.54 cm 454 g = 1.00 lb 1.00 L = 1.06 qt Equalities if two expressions are linked by an equal sign, they are to be equal quantities-You need to be able to use the unit conversion method to change convert a quantity from one unit to an equal amount in another unit. Such as changing cm to in.- The Unit Conversion Method (pg 66) 1. Identify the quantity and unit and write it down 2. Identify the desired new unit 1 1 Page of 7 3. Determine the conversion factor 4. Complete the calculation-Complete these conversions. 9.88 cm = ? in 10.7 qts = ? L 73.1 in = ? ft73....
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This note was uploaded on 05/06/2010 for the course CHEM 101 taught by Professor Griffith during the Spring '08 term at Illinois Valley CC.
- Spring '08