What is the initial chemical equation discussed in the video?

Balancing Chemical Equations

Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Ethan Morris
FREE Resource
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
KBrO3 -> KBr + O2
KBrO3 -> K + Br2 + O2
KBrO3 -> KBrO + O2
KBrO3 -> KBr + O3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many oxygen atoms are present on the product side initially?
Four
Three
Two
One
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step taken to balance the oxygen atoms?
Add more O2
Multiply KBrO3 by two
Multiply O2 by three
Add more KBrO3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After multiplying KBrO3 by two, how many oxygen atoms are on the reactant side?
Five
Seven
Four
Six
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What coefficient is placed in front of O2 to balance the oxygen atoms?
Four
Three
Two
One
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the imbalance of potassium and bromine atoms corrected?
By adding more KBr
By multiplying KBr by two
By adding more KBrO3
By multiplying KBrO3 by three
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final balanced equation for the decomposition of potassium bromate?
2 KBrO3 -> KBr + 2 O2
KBrO3 -> KBr + O2
KBrO3 -> 2 KBr + 3 O2
2 KBrO3 -> 2 KBr + 3 O2
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the key trick mentioned for balancing equations with odd-numbered oxygen atoms?
Add more reactants
Convert odd numbers to even
Use fractional coefficients
Ignore the imbalance
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who is the narrator of the video?
Dr. D
Dr. C
Dr. A
Dr. B
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