UNIT CONVERSIONS
HEBDEN Pg 9-16
Introduction
• Familiar with
77
2 = 2
7
2
SIMPLIFIED VERSION
have
wanthave = want
CONVERSION FACTOR
How many g are there in a mg?
g
mg310
1
CONVERSION FACTOR
mg
prefixBase unit
CONVERSION FACTOR
0.007 mg = ? g
STEP 1: Change Value into Scientific Notation
mg3107
STEP 2:Conversion factor
0.007 mg = ? g
mg
gmg3107
CONVERSION FACTOR
Unit we want
Unit we have
CONVERSION FACTOR
0.007 mg = ? g
mg3107 mg
g
1
10 3
STEP 3:Put 1 Next to prefix
g6107
Whole Numbers
01033
Simple Conversions - 1
5 ng = ? g
ng0105ng
g
1
10 9
g9105
Simple Conversions - 2
0.0006 uL = ? L
L4106 L
L
110 6
L10106
Simple Conversions - 3
35 000 ng = ? g
ng4103ng
g
1
10 9
g5105.3
Hebden
Pg 21 of Text 17 a-f (try “g”)
Double Conversion
60 000 mg = ? Gg
prefix 1 base unit prefix 2
mg g Gg
Double Conversion
mg g
g Gg
Double Conversion
60 000 mg = ? Gg
mg4106mg
g
1
10 3
g1106
g1106g
Gg910
1 Gg8106
Double Conversion
5 dL = ? uL
5 dL = ? uL
L
5 dL = ? uL
Double Conversion
dL0105dL
L
1
10 1
L1105
L1105 L
L610
1
L5105
Double Conversion
6 pm = ? km
pm0106pm
m
1
10 12
m
km310
1
km15106
Time Units
Time units – don’t need scientific notation
s60
min1
min60
1hr
How many?
How many seconds in a year (365 days)?
Plan: 1a d h min s
a1a
d
1
365
d
h
1
24
h1
min60
min1
60s
ss 71016224.3400,622,31
Converting Bottom Unit
0.008 mL/s = ? mL/min
min
48.0
min1
60008.0 mls
s
ml
Converting Bottom Unit
4 Kg/L = ? Kg/mL
mL
Kg
mL
L
L
Kg 231 100.4
1
10100.4
Complex Unit Conversion
5.6 ug/mL = ? ng/L
g
5.6 ug/mL = ? ng/L
mL
ug0106.5 g
g
110 6
g
ng910
1
L
mL310
1
L
ng6106.5
Complex Unit Conversion
Complex Unit Conversion
400 g/cL = ? mg/L
cL
g2104g
mg310
1
L
cL210
1
L
mg7104
Complex Unit Conversion
0.008 mg/mL = ? Kg/L
mL
mg3108 mg
g
1
10 3
g
Kg310
1
L
mL310
1
L
Kg6108
Complex Unit Conversion
0.003 ng/s = ? mg/min
s
ng3103 ng
g
1
10 9
g
mg310
1
min1
60s
min60103 9 mg
min108.1 7 mg
Hebden
Pg 21 of Text 17 (l-o)Assignment #6