StoichiometryMoles and Molar Mass41Choose the best answerWhich sample has the greatest mass?A2 mol CO₂B2 mol O₂C2 mol N₂D1 mol O₃ Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms42Choose the best answerWhat is the ratio of the total number of atoms in 2.2 g CO₂ to that in 1.7 g NH₃?A1/2B1/8C3/8D3/2 Like 0 Discuss 0Share
StoichiometryPercentage Yield43Choose the best answerWhy is the percentage yield of a reaction often less than 100%?ASome reactants may remain unreactedBProduct may be lost during separation or transferCSide reactions may produce unwanted productsDAll of the above Like 0 Discuss 0Share
StoichiometryPercentage Yield44Choose 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
Stoichiometry#Atomic Structure#Isotopes45Choose the best answerAmong elements with odd atomic numbers, what is the usual maximum number of stable isotopes?A1B2C3D4 Like 0 Discuss 0Share