StoichiometryMole#Mole Concept141Choose the best answerWhich statements are correct for 18 g of water?A6.02 × 10²³ molecules of waterB2 × 6.02 × 10²³ atoms of hydrogenC6.02 × 10²³ atoms of oxygenDA, B and C Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes142Choose the best answerAston’s mass spectrograph separates isotopes mainly on the basis of their:AAtomic numberBNumber of neutronsCMass-to-charge ratioDChemical properties Like 0 Discuss 0Share
StoichiometryMole Concept143Choose the best answerThe amount of substance containing NA specified entities is called:AOne moleBAvogadro constantCMolecular massDFormula mass Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules144Choose the best answer4.6 g C₂H₅OH and 3.0 g C₂H₆ contain:ADifferent numbers of moleculesBDifferent masses of carbonCEqual numbers of moleculesD0.2 mol oxygen atoms in each Like 0 Discuss 0Share
StoichiometryMolar Volume at STP145Choose the best answerWhat volume is occupied by 1 g O₂ at STP?A22.414 dm³B0.70 dm³C22414 cm³D0.22414 m³ Like 0 Discuss 0Share