StoichiometryMole Concept81Choose the best answerWhich statement is incorrect?AMass of 1 mol Cl₂ = 35.5 gB1 mol H₂ contains 6.022 × 10²³ moleculesC23 g Na and 24 g Mg contain approximately equal numbers of atomsD1 mol ideal O₂ occupies about 22.4 dm³ at 273 K and 1 atm Like 0 Discuss 0Share
BasicsStoichiometry #Mole Concept82Choose the best answerWhich statement correctly describes the particles present in 1 mole of CaCO₃?A6.02 × 10²³ molecules of CaCO₃B6.02 × 10²³ formula units of CaCO₃C6.02 × 10²³ Ca atoms onlyD6.02 × 10²³ g of CaCO₃ Like 0 Discuss 0Share
StoichiometryMolar Volume at STP83Choose the best answerWhat volume is occupied by 0.5 mol of an ideal gas at STP (273 K and 1 atm)?A22400 cm³B11200 cm³C22.4 mLDNone of these Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Electrons84Choose the best answerThe number of electrons present in 0.1 mol CH₄ is:A10NAB5NACNAD0.1NA Like 0 Discuss 0Share
StoichiometryMass–Volume Relationship85Choose the best answerWhat volume is occupied by 4.4 g CO₂ at STP (273 K and 1 atm)?A22.4 cm³B224 cm³C2240 cm³D22400 cm³ Like 0 Discuss 0Share