1. Single-Factor Dimensional Analysis

2. WRITING CONVERSION FACTORS
Conversion factors are used when you have to convert a quantity from one unit to another.
Converting from one factor to another using a conversion factor is the process of DIMENSIONAL ANALYSIS.
Any equality can be written in the form of a fraction called a conversion factor. A conversion factor is easily distinguished from all other numbers because it is always a fraction that contains different units in the numerator and denominator.
CONVERSION FACTORS:
Numerator OR 1 kg Denominator lb.

3. WORKED EXAMPLE 1
What is the mass, in grams, of a piece of lead that has a volume of cm3?
SOLUTION.
1g= 1cm3, so…
 19.84 cm3 x 1 g = g = 1.98 x 101 g
1 cm3

4. Practice 1. Convert 4.5 weeks to minutes. Solution.
4.5 wk x 7 days x 24 hours x 60 min week day hr
= min = 4.50 x 104 min

5. Practice 2. Convert 30 mL to dm3 Solution.
30 mL x L x dm mL L
= x 10-2 dm3