StoichiometryMole Concept and Avogadro Constant151Choose the best answerIf the number of entities defined as one mole were hypothetically changed from 6.02 × 10²³ to 6.02 × 10²⁰, which quantity would change?ADefinition of gramBMass associated with one mole of carbonCStoichiometric ratios in a balanced equationDRatio of elements in a compound Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules152Choose the best answerWhich sample contains the greatest number of H₂O molecules?A18 mL liquid waterB0.18 g waterC0.00224 L water vapour at 273 K and 1 atmD4 × 10⁻³ mol water Like 0 Discuss 0Share
StoichiometryMole Concept and Avogadro Constant153Choose the best answerOne mole of C₂H₆ and one mole of C₂H₅OH contain equal:ANumbers of moleculesBNumbers of atomsCNumbers of electronsDMasses Like 0 Discuss 0Share
StoichiometryStoichiometric Coefficients and Mole Ratios154Choose the best answerThe equation: 2Al + 3/2 O₂ → Al₂O₃ shows that:A2 mol Al react with 3/2 mol O₂ to produce 7/2 mol Al₂O₃B2 g Al react with 3/2 g O₂C2 g Al react with 3/2 L O₂D2 mol Al react with 3/2 mol O₂ to produce 1 mol Al₂O₃ Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms155Choose the best answerIf 32 g O₂ contains 6.022 × 10²³ molecules, how many sulfur atoms are present in 32 g S?A6.022 × 10²³B3.011 × 10²³C12.044 × 10²³D1 × 10²³ Like 0 Discuss 0Share