SINDH MDCAT 2019 CHEMISTRY#Significant Figures#Stoichiometry136Choose the best answerDetermine the significant figures in 0.0085: (Sindh MDCAT 2019)A4B3C2D1 Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Mole Concept137Choose the best answerWhich sequence correctly represents atom → molecule → compound?AHe → O₂ → OBNa → H₂ → H₂OCO → O₂ → ODH → H₂O → H₂ Like 0 Discuss 0Share2
Stoichiometry Stoichiometry MCQS#Atomic Mass138Choose the best answerIf the atomic mass of element X is 8 u, which statement is correct?AOne atom of X has mass 8 g.BOne atom of X is 8 times heavier than 1 amu.COne mole of X has mass 8 amu.DThe mass of one atom of X is 8 kg. Like 0 Discuss 0Share
StoichiometryMoles and Molar Mass139Choose the best answerWhich sample has the least mass?A0.5 mol O₂B2 mol NH₃C0.25 mol SO₂D0.5 mol H₂O Like 0 Discuss 0Share
StoichiometryMolar Mass from Gas Volume140Choose the best answerA 7.5 g sample of a gas occupies 5.6 dm³ at STP (273 K and 1 atm). Its molar mass is:A28 g mol⁻¹B30 g mol⁻¹C32 g mol⁻¹D44 g mol⁻¹ Like 0 Discuss 0Share