The table above represents the percentage composition of a hydrocarbon. Determine its empirical formula.
Correct answer: C. CH₃
- A. CH₄
- B. C₂H₅
- C. CH₃
- D. CH₂
Explanation
Moles: C = 80/12 = 6.67, H = 20/1 = 20 → divide by smaller (6.67): CH₃.
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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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