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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
Answer
  • 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
Answer
  • 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
Answer
  • 21.0gN2

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

9
Answer
  • 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
Answer
  • 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
Answers
  • 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
Answer
  • 79.8
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