Lycoming College                                          Quiz 1                          Write name on back,

Chem 110, 2002                                             15 points                     upper right corner

 

1.                  The SI prefix meaning 10 6 is named ________________________________, and

symbolized as __________________________________.

 

2.                  Change 4206 μg (micrograms) to g (grams).

 

 

 

 

3.                  The number of significant figures in 0.01004 g is __________________________.

 

4.                  Express the number 16,507,000 in either scientific or engineering notation, rounded to two significant figures.

 

 

 

 

5a.       A liquid has a density of 1.22 g.ml-1 (1.22 g/ml).  What volume would be needed to obtain 2.5g?

 

 

 

 

 

 

 

 

 

 

5b.       This liquid will not mix with water.  Will it float above or sink below water?  _________

 

6.            When the Pharmacopoeia of London was compiled in 1618, the Troy system of measure

       was used to prepare medicine.  Among the units used were:

 

      3 scruples         =          1 drachm

      8 drachms        =          1 ounce

      12 ounces         =          1 pound

 

  1. A dose of medicine weighed 64 drachms. 

How many Tory pounds did this equal?

 

 

 

  1. The same dose of 64 drachms would have equaled how many scruples?