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CHM130 Lecture Day 2 Dimensional Analysis Metric Conversions

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1 CHM130 Lecture Day 2 Dimensional Analysis Metric Conversions
Units of Measure Metric/Metric Conversions English/Metric Conversions Metric/English Conversion Temperature Scales Fahrenheit Celsius Kelvin Temperature Conversions

2 Gasoline is $3.50 per gallon. Calculate the amount
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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4 Metric Conversions Units of Measure
Powers of 10

5 centi- (c-)10-2 1 hundredth milli- (m-)10-3 1 thousandth
tera- (T-) trillion giga- (G-) billion mega- (M-) million kilo- (k-) thousand hecto- (h-) hundred deka- (da-) ten Unit of measure deci- (d-) tenth centi- (c-) hundredth milli- (m-) thousandth micro- (µ-) millionth nano- (n-) billionth pico- (p-) trillionth femto- (f-) quadrillionth

6 kilo- (k-) thousand hecto- (h-) hundred deka- (da-) ten gram (g) Unit of measure meter (m) liter (L) deci- (d-) tenth centi- (c-) hundredth milli- (m-) thousandth

7 Metric/Metric Conversions

8 kilo hecto deca Unit of measure deci centi milli K h da gram (g) d c m
$ $ $ $ cents cent cent kilo hecto deca Unit of measure deci centi milli K h da gram (g) d c m Liter (L) meter (m) kg hg dag g dg cg mg kL hL daL L dL cL mL km hm dam m dm cm mm

9 English/Metric Conversion Metric/English Conversion
2.54 cm = 1 inch 946 mL = 1 quart 454 grams = 1 pound

10 The distance from Mesa to Tucson is about 120 miles
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)

11 Temperature Scales Fahrenheit Celsius Kelvin

12 Temperature Conversions
1. Celsius to Kelvin or Kelvin to Celsius

13 Temperature Conversions- Formula
Celsius to Fahrenheit or Fahrenheit to Celsius oC = 5 (oF-32) 9 oF = 9 oC 5

14 Temperature Conversions- 40 Method
A. Celsius to Fahrenheit or Fahrenheit to Celsius 100 oC to oF 32 oF to oC 1. Add 40 2. Multiply or divide by 1.8 3. Subtract 40

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