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## Honors Stoichiometry Examples

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### Honors Stoichiometry Examples Example 1 What mass of carbon dioxide in grams is needed to react with 3.00mol of H2O in the following photosynthetic reaction? – PowerPoint PPT presentation

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Title: Honors Stoichiometry Examples

1
Honors Stoichiometry Examples
2
Example 1
• What mass of carbon dioxide in grams is needed to
react with 3.00mol of H2O in the following
photosynthetic reaction?
• 6CO2 6HOH?C6H12O6 6O2

3
• 132g CO2

4
Example 2
• The disinfectant hydrogen peroxide H2O2
decomposes to form water and oxygen gas. How many
moles of oxygen will result from the
decomposition of 5.0 mol of hydrogen peroxide?

5
• 2.5mol O2

6
Example 3
• When sodium azide is activated in an automobile
airbag, nitrogen gas and sodium are produced
according to the equation
• 2NaN3?2Na 3N2
• If 0.500mol of NaN3 react what mass in grams of
nitrogen would result?

7
• 21.0gN2

8
Example 4
• How many moles of mercury (II) oxide are needed
to produce 125g of oxygen and mercury?

9
• 7.81mol HgO

10
Example 5
• When magnesium burns in air, it combines with
oxygen to form magnesium oxide according to the
following equation.
• 2MgO2?2MgO
• What mass in grams of magnesium oxide is produced
from 2.00mol of magnesium?

11
• 80.0g MgO

12
Example 6
• Ammonia is widely used as a fertilizer and in
many household cleaners. How many moles of
ammonia are produced when 6 mol of hydrogen gas
react with excess nitrogen gas?

13
• 4 mol

14
Example 7
• Methanol can be produced through the reaction of
CO and H2 in the presence of a catalyst.
• CO2H2?CH3OH
• If 75.0g of CO reacts to produce 68.4g CH3OH,
what is the percent yield of CH3OH?

15