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Dimensional Analysis
Tuesday, September 28, 2010 /5:57 PM

Dimensional Analysis:
The process of dimensional analysis is converting between currencies in chemistry it is usually nessary to convert between units. 

Steps:
1. Find a unit equality.
2. Find the conversion factors.
3. Apply conversion factors.
4. Cancel units.

Example:
How many seconds are in 6.7 hours?
Unit Equality                  3600s = 1
Conversion Factor         1 = 3600s
                                     1h
Use the Conversion Factor    6.7h x 60min x 60s
                                           1h     1min
Canel Units                             6.7h x 60min x 60s
                                                          1h  1min
Answer = 24120s

Example:
Convert 872 mg/s into g/min.
872mg    x    1g    x    60s =  52.32g/min                         60mins =1min
s                  1000mg    1min                                                  60s
                                                                                            1min
                                                                                  1000mg = 1g
                                                                                         1g
                                                                                          1000mg 

Example:
Convert 19kJ/h into J/s.
19kJ    x    1000J    x    1h      =  5.27 J/s                 1h = 3600s
 h             1kJ          3600s                                         1h
                                                                                 3600s
                                                                             1000J = 1kJ
                                                                                  1000J
                                                                                    1kJ

~christina :]