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Conversion Factor. In chemistry it is often useful to be able to convert from one unit to another For example, we may want to know how many atoms are in a particular number of grams of a substance. Conversion Factor.

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Presentation Transcript
slide2

In chemistry it is often useful to be able to convert from one unit to another

  • For example, we may want to know how many atoms are in a particular number of grams of a substance
conversion factor1
Conversion Factor
  • A conversion factor is an equality between two units that is used to change from one of the units to the other
  • Example: 12 donuts are in a dozen

or

slide4

36 dozen

12

=

3 dozen

=

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

1 dozen

Use this conversion factor

12 donuts

1 dozen

12 donuts

36 donuts x 1 dozen

12 donuts

36 donuts x =

slide6

If you have 9900 grams of donuts,

how many donuts do you have

if each donut has a mass of 150 grams?

slide7

If you have 9900 grams of donuts,

how many donuts do you have

if each donut has a mass of 150 grams?

What is the relationship between grams and donuts?

150 grams = 1 donut

slide8

150 g

1 donut

1 donut

150 g

150 g = 1 donut

these are your

conversion factors

slide9

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?

slide10

begin with the amount

given in the problem

The question is…

9900 grams

If you have 9900 grams of donuts,

how many donuts do you have

if each donut has a mass of 150 grams?

9900 g

slide11

converts grams

to donuts

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?

each donut has a mass of 150 grams

slide12

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?

how many donuts do you have