Stoichiometry
Presentation
•
Science
•
9th - 12th Grade
•
Medium
+2
Standards-aligned
Lisa Bates-Glass
Used 6+ times
FREE Resource
3 Slides • 3 Questions
1
Stoichiometry
Review Questions
2
Steps to solving these types of problems
STEP 1: When you start the problem with GRAMS, convert to moles using the molar mass. (1 mol=molar masss)
STEP 2: Use the balanced chemical equation to convert from given substances to wanted substance. The balanced chemical equation is the MOLE relationships between the substances.
STEP 3: If the problem is asking you to express the answer in grams, use the molar mass to convert from moles to grams. (1 mol-molar mass)
3
Poll
Does the previous slide provide guidance to solving the problems?
yes
no
I'm not sure
4
Open Ended
Let's try a problem together. This is the basis for all the other problems of this type. It's a mol-mol conversion.
Given the equation, 2 NaCl → 2 Na + Cl2 if you have 15 moles of NaCl, how many moles of Na can be formed?
Work out this problem on paper and type your answer in.
5
Did you get 15 moles Na?
How do you know?
6
Multiple Choice
Given the following equation, 2 NaCl → 2 Na + Cl2 , how many grams of Chlorine can be formed if you start out with 5 grams of NaCl?
3 grams Cl2
30 grams Cl2
I have no idea how to solve this problem!
Stoichiometry
Review Questions
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