CHM130 Lecture Day 2 Dimensional Analysis Metric Conversions
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Transcript of CHM130 Lecture Day 2 Dimensional Analysis Metric Conversions
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CHM130 Lecture Day 2
Dimensional AnalysisMetric Conversions
Units of Measure Metric/Metric Conversions English/Metric Conversions Metric/English Conversion
Temperature ScalesFahrenheitCelsiusKelvinTemperature Conversions
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Dimensional Analysis
Gasoline is $3.50 per gallon. Calculate the amount of gas that can be purchased with $50.00
What is given??__________
What is the unknown??__________
What is the conversion factor??______________
Set up the problem
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Metric Conversions
Units of Measure
Powers of 10http://www.wordwizz.com/pages/10exp25.htm
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http://www.unc.edu/~rowlett/units/prefixes.html
tera- (T-) 1012 1 trilliongiga- (G-) 109 1 billionmega- (M-) 106 1 millionkilo- (k-) 103 1 thousandhecto- (h-) 102 1 hundreddeka- (da-) 101 tenUnit of measuredeci- (d-)10-1 1 tenthcenti- (c-)10-2 1 hundredthmilli- (m-)10-3 1 thousandthmicro- (µ-)10-6 1 millionthnano- (n-)10-9 1 billionthpico- (p-)10-12 1 trillionthfemto- (f-)10-15 1 quadrillionth
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kilo- (k-) 103 1 thousandhecto- (h-) 102 1 hundreddeka- (da-) 101 ten
gram (g)Unit of measure meter (m)
liter (L)
deci- (d-)10-1 1 tenthcenti- (c-)10-2 1 hundredthmilli- (m-)10-3 1 thousandth
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Metric/Metric Conversions
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kilo hecto deca Unit of measure deci centi milli $1000 $100 $10 $1 10 cents 1 cent 1 cent
K h da gram (g) d c mLiter (L)meter (m)
kg hg dag g dg cg mg
kL hL daL L dL cL mLkm hm dam m dm cm mm
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English/Metric ConversionMetric/English Conversion
2.54 cm = 1 inch946 mL = 1 quart454 grams = 1 pound
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The distance from Mesa to Tucson is about 120 miles. Calculate the distance from Mesa to Tucson in kilometers. (Use 2.54 cm per 1 inch)
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Temperature Scales Fahrenheit Celsius Kelvin
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Temperature Conversions1. Celsius to Kelvin or Kelvin to Celsius
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Temperature Conversions- Formula1.Celsius to Fahrenheit or Fahrenheit to Celsius
oC = 5 (oF-32) 9
oF = 9 oC + 32 5
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Temperature Conversions- 40 MethodA. Celsius to Fahrenheit or Fahrenheit to Celsius
1. Add 40100 oC to oF 32 oF to oC
2. Multiply or divide by 1.8
3. Subtract 40
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