What is the initial count of oxygen atoms on the product side of the equation PbO + C yields Pb + CO2?

Balancing Chemical Equations

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Chemistry
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9th - 10th Grade
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Hard

Lucas Foster
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
One
Two
Three
Four
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What change is made to balance the oxygen atoms in the equation?
Add a coefficient of 3 in front of PbO
Add a coefficient of 2 in front of PbO
Add a coefficient of 2 in front of CO2
Add a coefficient of 3 in front of CO2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After balancing the oxygen atoms, what is the next step to balance the equation?
Add a coefficient of 3 in front of Pb
Add a coefficient of 2 in front of C
Add a coefficient of 2 in front of Pb
Add a coefficient of 3 in front of C
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final balanced equation for PbO + C yields Pb + CO2?
2PbO + C yields Pb + 2CO2
PbO + 2C yields Pb + 2CO2
2PbO + C yields 2Pb + CO2
PbO + C yields Pb + CO2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it necessary to adjust the coefficients in a chemical equation?
To change the substances involved
To balance the number of atoms on both sides
To increase the reaction speed
To decrease the reaction speed
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