
Stoichiometry Lesson #1
Presentation
•
Chemistry
•
9th - 12th Grade
•
Hard
Standards-aligned
LeAnne Gisler
Used 5+ times
FREE Resource
13 Slides • 11 Questions
1
Stoichiometry Lesson #1
Stoichiometry is a fundamental method of converting units in chemical reactions in chemistry.
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4
Multiple Choice
I have 5 eggs, how many cookies can I make? (assume there is enough of every other ingredient)
2 dozen cookies
5 dozen cookies
12.5 dozen cookies
2.5 dozen cookies
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6
Multiple Choice
In a balanced chemical equation, coefficients represent ___.
subscripts
atoms
grams
moles
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11
Multiple Choice
2KClO3 --> 2KCl + 3O2
How many moles of oxygen (O2) can be produced from the decomposition of 15.0 moles of potassium chlorate (KClO3)?
3.00 moles
1.50 moles
10.00 moles
22.5 moles
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13
Multiple Choice
2H2O --> 2H2 + O2
How many grams of hydrogen (H2) could be produced from the decomposition of 25.0 moles of water (H2O)?
101 grams
50.5 grams
2.02 grams
48.48 grams
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The FIRST question you should always ask when solving a stoichiometry problem is...
IS THE KNOWN VALUE IN MOLES???
If it is NOT in moles, convert it to moles!!!
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Multiple Choice
4NH3 + 5O2 --> 4NO + 6H2O
How many moles of NH3 are required to produce 40.0 grams of NO?
The FIRST step in this problem is to...
panic because I will never understand this stuff
convert 40.0 grams NO to moles of NO
convert 40.0 grams of NO to moles of NH3
convert 40.0 grams of NO to moles of H2O
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Multiple Choice
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
6.7 mol
1.0 mol
10.1 mol
4.5 mol
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Multiple Choice
12.00 moles of NaClO3 will produce how many grams of O2?
21
Multiple Choice
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron (Fe) can be made from 6 moles H2?
4 moles Fe
6 moles Fe
9 moles Fe
2 moles Fe
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Multiple Choice
What is the mole ratio in the following reaction:
2CO + O2 → 2CO2
2:1:2
1:1:1
1:2:1
Have no clue what a mole ratios is!!
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Multiple Choice
How many particles are in a mole?
602
602 million
602 moles
6.02 x 1023
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Multiple Choice
How many moles are in 19.82 g Mg?
1.226mol Mg
481.7mol Mg
1.000mol Mg
0.82 mol Mg
Stoichiometry Lesson #1
Stoichiometry is a fundamental method of converting units in chemical reactions in chemistry.
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