StoichiometryMolar Volume at STP16Choose the best answer22.4 L H₂O vapour at STP (273 K and 1 atm) is condensed. If the density of liquid water is 1.0 g mL⁻¹, what volume of liquid water is obtained?A18 LB1 LC1 mLD18 mL Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Percentage Yield#Stoichiometry17Choose the best answerFor the reaction N₂ + 3H₂ → 2NH₃, 56 g N₂ reacts with 12 g H₂ and produces 51 g NH₃. The theoretical yield and percentage yield are: (IBA MDCAT 2025)ATY = 68 g and PY = 75%BTY = 34 g and PY = 67%CTY = 68 g and PY = 33%DTY = 34 g and PY = 75% Like 4 Discuss 0Share
StoichiometryMass–Mass Stoichiometry18Choose the best answerHow many grams of CO₂ are produced when 16 g CH₄ burns completely? CH₄ + 2O₂ → CO₂ + 2H₂OA44 gB22 gC11 gD5.5 g Like 0 Discuss 0Share
StoichiometryMole–Mass Stoichiometry19Choose the best answer1.5 mol O₂ reacts completely with Mg: 2Mg + O₂ → 2MgO What mass of Mg is consumed?A72 gB36 gC48 gD24 g Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms20Choose the best answerHow many chlorine atoms are present in 2 mol Cl₂?A2 × 6.02 × 10²³ atomsB35.5 × 6.02 × 10²³ atomsC2 × 10²³ atomsD4 × 6.02 × 10²³ atoms Like 0 Discuss 0Share