StoichiometryAvogadro's Law251Choose the best answerWhich gaseous samples occupy the same volume at the same temperature and pressure?A1 mol CO and 1 mol N₂B1 mol O₂ and 1 mol N₂C1 mol CO and 1 mol CO₂DAll of these Like 0 Discuss 0Share
StoichiometryPercentage Yield252Choose the best answerIn an experiment, 4 mol H₂O are decomposed and 2 mol H₂ are actually obtained: 2H₂O → 2H₂ + O₂ What is the percentage yield of H₂?A25%B50%C75%D100% Like 0 Discuss 0Share
StoichiometryMass–Mass Stoichiometry253Choose the best answerWhat mass of O₂ is required to convert 1.35 g Al completely into Al₂O₃? 4Al + 3O₂ → 2Al₂O₃A9.6 gB4.8 gC2.4 gD1.2 g Like 0 Discuss 0Share
StoichiometryMolar Mass from Gas Volume254Choose the best answerAt STP (273 K and 1 atm), 5.6 L of a gas has a mass of 8 g. Its molar mass is:A32 g mol⁻¹B16 g mol⁻¹C8 g mol⁻¹D4 g mol⁻¹ Like 0 Discuss 0Share
StoichiometryGay-Lussac's Law of Combining Volumes255Choose the best answerThe volume–volume relationship between reacting gases is based on:ALaw of definite compositionBGay-Lussac's law of combining volumesCAvogadro constantDLaw of conservation of mass Like 0 Discuss 0Share