StoichiometryMass–Volume Stoichiometry46Choose the best answerIn the reaction: 2Na + 2H₂O → 2NaOH + H₂ what volume of H₂ at STP (273 K and 1 atm) is produced by 23 g Na?A11.2 dm³B2.44 dm³C10.60 dm³D44.8 dm³ Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Physical Change47Choose the best answerIdentify the physical change among the following.ARusting of ironBBurning magnesium ribbonCBurning a candleDMelting wax Like 0 Discuss 0Share
StoichiometryMass–Volume Stoichiometry48Choose the best answerWhat mass of CS₂ is required to produce 22.4 dm³ SO₂ at STP? CS₂ + 3O₂ → CO₂ + 2SO₂A19 gB38 gC76 gD152 g Like 0 Discuss 0Share
StoichiometryMole–Mass Stoichiometry49Choose the best answerWhat mass of SO₂ is formed by burning sulfur in 5.0 mol O₂? S + O₂ → SO₂A640 gB320 gC160 gD80 g Like 0 Discuss 0Share
StoichiometryMass–Volume Stoichiometry50Choose the best answerWhat volume of CO₂ at STP (273 K and 1 atm) is produced by complete combustion of 7 g C₂H₄? C₂H₄ + 3O₂ → 2CO₂ + 2H₂OA44.8 dm³B22.4 dm³C11.2 dm³D5.6 dm³ Like 0 Discuss 0Share