Question detail
Balance the following symbol equation: C3H8 + O2 → CO2 + H2O.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations
Question
Balance the following symbol equation: C3H8 + O2 → CO2 + H2O.
Answer
The balanced equation is: C3H8 + 5 O2 → 3 CO2 + 4 H2O.
Explanation
This question tests the ability to balance a chemical equation by ensuring that the number of atoms of each element is the same on both sides. The answer demonstrates understanding of the conservation of mass principle.
Common mistake
Miscounting Atoms
Students often forget to account for the coefficients in front of compounds when balancing equations, leading to incorrect atom counts.
Always include the coefficients when counting atoms for each element on both sides of the equation to ensure they are equal.
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