StoichiometryLimiting Reagent136Choose the best answerFor the reaction: A + 2B → AB₂ in which case is B the limiting reagent?A50 mol A with 100 mol BB100 mol A with 200 mol BC100 atoms A with 100 atoms BD50 atoms A with 100 atoms B Like 0 Discuss 0Share
StoichiometryLimiting Reagent137Choose the best answerWhich statement about a limiting reagent is FALSE?AIt is completely consumedBIt limits the amount of product formedCIt is always the reactant with the smaller initial massDIts complete consumption stops further product formation Like 0 Discuss 0Share
StoichiometryPercentage Composition by Mass138Choose the best answerAn oxide has formula M₂O₃ and contains 68.57% oxygen by mass. The atomic mass of M is approximately:A11B22C27D56 Like 0 Discuss 0Share
StoichiometryMole Concept and Mass Comparison139Choose the best answerConsider: I. 2.5 mol CH₄ II. 22.4 dm³ O₂ at STP III. 6.02 × 10²² C atoms IV. 3.5 mol He What is the increasing order of their masses?AI < II < III < IVBIV < III < II < ICIII < IV < II < IDII < I < III < IV Like 1 Discuss 0Share
StoichiometryRelative Atomic Mass140Choose the best answerThe mass of an atom relative to 1/12 of the mass of a ¹²C atom is called:ARelative atomic massBMolecular massCMolar massDEquivalent mass Like 0 Discuss 0Share