StoichiometryMole Concept and Number of Molecules46Choose the best answer56 g N₂ contains the same number of molecules as:A180 g glucoseB8 g CH₄C128 g O₂D4 g H₂ Like 0 Discuss 0Share
StoichiometryLimiting Reagent47Choose the best answer22.4 dm³ CH₄ and 11.2 dm³ O₂ are mixed at STP: CH₄ + 2O₂ → CO₂ + 2H₂O Which is the limiting reagent?ACH₄BO₂CCO₂DH₂O Like 0 Discuss 0Share
StoichiometryGas Volume and Number of Moles48Choose the best answerWhich sample contains the minimum number of moles at STP (273 K and 1 atm)?A1 dm³ CH₄B5 dm³ HeC10 dm³ H₂D22.4 dm³ Cl₂ Like 0 Discuss 0Share
StoichiometryMass–Mass Stoichiometry49Choose the best answerWhat mass of O₂ is required to convert 1.35 g Al completely into Al₂O₃? 4Al + 3O₂ → 2Al₂O₃A9.6 gB4.8 gC2.4 gD1.2 g Like 0 Discuss 0Share
StoichiometryGas Density at STP50Choose the best answerWhat is the mass of 1 dm³ CO₂ at STP (273 K and 1 atm)?A2.4 gB4.2 gC6.45 gD1.96 g Like 0 Discuss 0Share