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Question 1
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Question 2
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Question 3
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What is the balance of this chemical equation? H2 + O2 -> H2O
Question 4
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Question 5
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Question 6
6.
Why is it important to balance chemical equations?
To make the equations look uniform
To satisfy the Law of Conservation of Mass
To make the equations easier to solve
To satisfy the Law of Conservation of Energy
Which of these reactions are correctly balanced?
CH4 + 2O2 -> 2H2O + CO2
2H2O -> 2H2 + O2
H2 + O2 -> H2O
2H2 + O2 -> 2H2O
The balancing of a chemical equation involves only changing the coefficients (numbers before elements/compounds), not the subscripts.
True
False
It is possible to balance a chemical equation by changing the chemical symbols of the elements involved.
True
False
The principle of conservation of mass states that no atoms are lost or created during a chemical reaction, hence they must be balanced on both sides of a chemical equation.