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United StatesChemistryQuick questions

Unit 4: Chemical Reactions

Quick questions on Representations of reactions - AP Chemistry Unit 4

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Balance the equation Al+O2Al2O3\text{Al} + \text{O}_2 \rightarrow \text{Al}_2\text{O}_3. [2 points]
What is q2?
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Explain why you balance an equation by changing coefficients, not subscripts. [1 point]

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