StoichiometryBalancing Chemical Equations1Choose the best answerWhen the equation is balanced: C₃H₈ + O₂ → CO₂ + H₂O the coefficient of O₂ is:A1.5B3.5C3D5 Like 1 Discuss 0Share
StoichiometryMass of a Single Molecule2Choose the best answerThe mass of one H₂O molecule is approximately:A3 × 10⁻²⁶ kgB3 × 10⁻²⁰ kgC6 × 10⁻²⁰ kgD1.5 × 10⁻²⁶ kg Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms3Choose the best answerWhat mass of glucose, C₆H₁₂O₆, contains 3 mol hydrogen atoms?A180 gB90 gC45 gDNone of these Like 0 Discuss 0Share
StoichiometryPercentage Yield4Choose the best answerWhat is the correct formula for percentage yield?A(Actual yield / Theoretical yield) × 100B(Theoretical yield / Actual yield) × 100C(Actual yield × Theoretical yield) × 100D(Actual yield + Theoretical yield) / 100 Like 0 Discuss 0Share
StoichiometryCombustion analysis5Choose the best answerWhich method is commonly used to analyze organic compounds containing C, H and O?ADecompositionBHydrogenationCCombustionDReduction Like 0 Discuss 0Share