Which of the following compounds has the same molecular and empirical formula?
Correct answer: C. C₁₂H₂₂O₁₁
- A. C₆H₁₂O₆
- B. C₂H₆O
- C. C₁₂H₂₂O₁₁
- D. C₂H₄O
Explanation
A compound's molecular and empirical formulas are the same if the subscripts in the molecular formula cannot be simplified by a common divisor. The subscripts in C₁₂H₂₂O₁₁ (sucrose) have no common factor and cannot be reduced.
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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