StoichiometryMole Concept and Avogadro Constant271Choose the best answerOne mole of C₂H₆ and one mole of C₂H₅OH contain equal:ANumbers of moleculesBNumbers of atomsCNumbers of electronsDMasses Like 0 Discuss 0Share
MDCAT Chemistry Past Paper 2023#Limiting Reagent#Stoichiometry272Choose the best answer7.6 grams of CS₂ is reacted with 12.8 g of O₂, CS₂ + 3O₂ → CO₂ + 2SO₂. The limiting reactant is: (MDCAT 2023)ACS₂BO₂CCO₂DSO₂ Like 0 Discuss 0Share
StoichiometryAtomic Mass and Mole Concept273Choose the best answer1.5 mol of an element has a mass of 84 g. Its atomic mass is:A35B56C65D60 Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms274Choose the best answerIf 32 g O₂ contains 6.022 × 10²³ molecules, how many sulfur atoms are present in 32 g S?A6.022 × 10²³B3.011 × 10²³C12.044 × 10²³D1 × 10²³ Like 0 Discuss 0Share
StoichiometryLimiting Reagent275Choose the best answerFor the reaction: A + 2B → AB₂ 5 mol A and 2 mol B are mixed. Which is the limiting reagent?AABBCAB₂DCannot be determined Like 0 Discuss 0Share