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Conversion Factors Conversion Factors

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Page 1: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

Conversion FactorsConversion Factors

In chemistry, it is often usefulto be able to convert from one

unit of measure to another

For example:mass of a substance converted to thenumber of atoms in that substance,or converting from one metric unitto another metric unit

First we will see how it works with dozen.

Page 4: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

You know that a dozen is 12 of something.

If you have 36 donuts,how many dozen donuts do you have?

Page 5: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

You want to know how many dozen in 36 donuts,and you know there is 1 dozen per 12 donuts, or 1 dozen12 donuts

Use this relationship to convert fromindividual donuts to dozen donuts:

Page 6: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

36 donuts x 1 dozen12 donuts

In the problem how many dozen in 36 donuts,you know there is 1 dozen per 12 donuts, or 1 dozen12 donuts

Use this relationship to convert fromindividual donuts to dozen donuts:

Page 7: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

In the problem how many dozen in 36 donuts,you know there is 1 dozen per 12 donuts, or 1 dozen12 donuts

36 donuts x = 1 dozen12 donuts

36 donuts x 1 dozen 12 donuts

Use this relationship to convert fromindividual donuts to dozen donuts:

Page 8: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

In the problem how many dozen in 36 donuts,you know there is 1 dozen per 12 donuts, or 1 dozen12 donuts

36 donuts x = 1 dozen12 donuts

36 donuts x 1 dozen 12 donuts

= 36 dozen 12

Use this relationship to convert fromindividual donuts to dozen donuts:

Page 9: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

In the problem how many dozen in 36 donuts,you know there is 1 dozen per 12 donuts, or 1 dozen12 donuts

36 donuts x = 1 dozen12 donuts

36 donuts x 1 dozen 12 donuts

= 36 dozen 12

= 3 dozen

Use this relationship to convert fromindividual donuts to dozen donuts:

Page 10: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

In the problem how many dozen in 36 donuts,you know there is 1 dozen per 12 donuts, or 1 dozen12 donuts

36 donuts x = 1 dozen12 donuts

36 donuts x 1 dozen 12 donuts

= 36 dozen 12

= 3 dozen

Use this relationship to convert fromindividual donuts to dozen donuts:

Page 11: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

If you have 2.5 dozen donuts, how many individualdonuts are there?

2.5 dozen x 12 donuts1 dozen

there are 12 donutsin 1 dozen

Page 12: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

If you have 2.5 dozen donuts, how many individualdonuts are there?

2.5 dozen x =12 donuts1 dozen

2.5 dozen x 12 donuts1 dozen

2.5 x 12 donuts1

= 30 donuts

Page 13: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

Let’s try converting donut mass to number of donuts…

Page 14: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

If you have 9900 grams of donuts,how many donuts do you have

if each donut has a mass of 150 grams?

Page 15: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

What is the relationship between grams and donuts?

150 grams = 1 donut

If you have 9900 grams of donuts,how many donuts do you have

if each donut has a mass of 150 grams?

Page 16: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

150 g = 1 donut

150 g1 donut

= 1

1 donut150 g = 1

these are yourconversion factors

Page 17: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

150 g = 1 donut

150 g1 donut

= 1

1 donut150 g = 1

converts donuts tograms (grams on top)

Page 18: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

150 g = 1 donut

150 g1 donut

= 1

1 donut150 g = 1

converts grams todonuts (donuts on top)

Page 19: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

The question is…

If you have 9900 grams of donuts,how many donuts do you have

if each donut has a mass of 150 grams?

Page 20: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

The question is…

If you have 9900 grams of donuts,how many donuts do you have

if each donut has a mass of 150 grams?

9900 grams

begin with the amountgiven in the problem

9900 grams

Page 21: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

The question is…

x9900 gram s 1 donut150 grams

converts gramsto donuts

If you have 9900 grams of donuts,how many donuts do you have

if each donut has a mass of 150 grams?each donut has a mass of 150 grams

1 donut150 g

9900 grams x

Page 22: Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted

9900 donuts 150

66 donuts

= 66 donuts

The question is…

x9900 gram s 1 donut150 grams

If you have 9900 grams of donuts,how many donuts do you have

if each donut has a mass of 150 grams?how many donuts do you have

9900 g 1 donut150 g

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