StoichiometryPercentage Yield126Choose the best answerIf actual yield is 15 g and theoretical yield is 20 g, what is the percentage yield?A50%B75%C80%D90% Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules127Choose the best answer56 g N₂ contains the same number of molecules as:A180 g glucoseB8 g CH₄C128 g O₂D4 g H₂ Like 0 Discuss 0Share
StoichiometryLimiting and Excess Reagents128Choose the best answerIf a reaction has a limiting reagent, what happens to the excess reagent?AIt is completely consumedBSome of it remains unreactedCIt becomes a catalystDIt determines the theoretical yield Like 0 Discuss 0Share
StoichiometryMole Concept and Specified Particles129Choose the best answerWhich sample contains exactly 1 mol of the stated particles?ACl₂ molecules in 35.5 g Cl₂BElectrons in 1.008 g H₂CH⁺ ions in 1 dm³ of 1 mol dm⁻³ H₂SO₄DO atoms in 22.4 dm³ O₂ at STP Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms130Choose the best answerWhich pair contains the same number of oxygen atoms?A0.5 mol H₂O and 1 mol SO₂B1 mol CO₂ and 0.5 mol SO₃C0.25 mol H₂O₂ and 0.5 mol H₂ODNone of these Like 0 Discuss 0Share