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In the metric system, what prefixes are used for quantities much greater than the fundamental unit?
mega- (10^6)
kilo- (10^3)
In the metric system, what prefixes are used for quantities much less than the fundamental unit?
deci- (10^-1)
centi- (^-2)
milli- (^-3)
micro- (^-6)
nano- (^-9)
pico- (^-12)
What are the measures for weight in the apothecarie's system of measure?
20 grains=1 scruple;
3 scruples=1 dram;
8 drams=1 ounce;
12 ounces=1 pound
What are the measures for volume in the apothecarie's system of measure?
60 minims=1 fluidram;
8 fluidrams=1 fluidounce;
16 fluidounces=1 pint;
2 pints=1 quart;
4 quarts=1 gallon
What are the units of measure in the avoirdupois system? (used for ordinary commerce)
1 avoirdupois grain=1 apothecaries' grain;
437.5 grains=1 ounce;
16 ounces=1 pound; note that the avoir ounce and pound ARE NOT equal to the apoth ounce and pound
1 inch = ? cm
1 inch = 2.54 cm
1 fluidounce = ? milliliters
1 fluidounce = 30 milliliters
1 gram = ? grains
1 gram = 15.4 grains
1 kilogram = ? pounds (avoir.)
1 kilogram = 2.2 pounds (avoir.)
1 gallon, US = ? mL
1 gallon, US = 3785 mL
How do you calculate equivalent weight?
Eq = MW / valence
How many osmoles are in NaCl?
2

osmoles = number of particles in solution (assuming complete dissociation)
What is the osmotic coefficient?
tells how much a salt form dissociates in solution and can be used to calculate osmolarity of IVF; usually not clinically relevant
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