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12.2

Chemical Calculations

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Writing and Using Mole Ratios

In chemical calculations, mole

__________ are used to convert between
moles of __________ and moles of
____________, between moles of
reactants, or between moles of products.

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Slide 2

12.2

Chemical Calculations

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Writing and Using Mole Ratios

Mole-Mole Calculations
A mole ratio is a ___________ ___________
derived from the coefficients of a balanced
chemical equation interpreted in terms of moles.

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Slide 3

12.2

Chemical Calculations

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Writing and Using Mole Ratios

To determine the number of moles in a sample
of a compound, first ___________ the mass of
the sample. Then use the ___________
_______________ to calculate the number of

moles in that mass.

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Slide 4

SAMPLE PROBLEM 12.2

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Slide 5

Practice Problems for Sample Problem 12.2

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Slide 6

12.2

Chemical Calculations

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Writing and Using Mole Ratios

Mass-Mass Calculations

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Slide 7

SAMPLE PROBLEM 12.3

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Slide 8

Practice Problems for Sample Problem 12.3

`

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Slide 9

12.2

Chemical Calculations

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Other Stoichiometric Calculations

In a typical stoichiometric problem, the
given quantity is first converted to
moles. Then the mole ratio from the
balanced equation is used to calculate
the number of moles of the wanted
substance. Finally, the moles are
converted to any other unit of
measurement related to the unit mole, as
the problem requires.

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Slide 10

12.2

Chemical Calculations

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Other Stoichiometric Calculations

Solution Diagram

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Slide 11

12.2

Chemical Calculations

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Other Stoichiometric Calculations

Problem-Solving Approach

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Slide 12

SAMPLE PROBLEM 12.4

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Slide 13

Practice Problems for Sample Problem 12.4

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Slide 14

SAMPLE PROBLEM 12.5

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Slide 15

Practice Problems for Sample Problem 12.5

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Slide 16

SAMPLE PROBLEM 12.6

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Slide 17

Practice Problems for Sample Problem 12.5

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