Lab Flashcards
When going from a smaller number to a larger number, what way do you move the decimal?
Left, value is going to be smaller
When going to from a larger unit to a smaller unit what why do you move the decimal?
right, value is going to get bigegr
Kilo
1000, 10^3 K
hecto
h 100 10^2
Deka
da 10^1
deci
d 1/10 10^-1
centi
c 1/100 10^-2
milli
m 1/1000 10^-3
micro
(the u thingy) 1/1000000 10^-6
macro
n 1/1000000000 10^-9
convert 1 kh to 1 dg
1 kg to dg k= 1000 10^3 dg= 1/10 10^-1 3--1= 4 10000 dg 0=or 1x10^4 dg
Proportions, why important?
Because most medications are prescribed based on a persons’ weight
What is a solutiomn
a solute (particles) dissolved in solvent (water)
suspenison
In a suspension the particles are insoluble
homogeneous solution
solutes are evenly dispersed throughout solvent
heterogeneous solutions
solutes are not evenly dispersed throughout solvent
Percent solution
this is determined by number of parts of solute per 100 parts of solution
molarity
number of moles dissolved in 1 L of solution or moles per liter
molecular weight
adding atomic weight in all molecules
osmolarity
measure of number of particles in solution # of oels x (number of particles) glucose does not dissolve so osmolarity is 2
How do you get total magnification
ocular lens x lens magnification
Ocular lens mag
10x
scanning lens
4x
low power lens
10x
high power lens
40x
oil immersion lens
100x
which objective lens requires the most light
oil immersion
which objective lens requires the least light
scanning
how do you fin actual size of something magnified
actual size= apparent size/ total magnification
