StoichiometryMole Concept and Mass Comparison176Choose 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
SINDH MDCAT 2018 Chemistry#Significant Figures#Stoichiometry177Choose the best answerHow many significant figures are there in 00.4793? (Sindh MDCAT 2018)A3B4C5D6 Like 0 Discuss 0Share
MDCAT Chemistry Past Papers Reconduct 2023#Scientific Notation#Stoichiometry178Choose the best answerExpress the number 75300 in scientific notation: (MDCAT Reconduct 2023)A7.5 × 10⁴B75.30 × 10⁴C7.53 × 10³D7.53 × 10⁴ Like 0 Discuss 0Share
StoichiometryRelative Atomic Mass179Choose 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
StoichiometryMole#Mole Concept180Choose 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