Fundamental Principles of Organic ChemistryFunctional Isomerism136Choose the best answerWhich pair has the same molecular formula?AEthene and “cycloethane”BPropene and cyclopropaneCButane and buteneDEthyne and ethene Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Pure Substances137Choose the best answerWhich option represents a pure substance?AAirBMilkCSodium chlorideDSoil Like 0 Discuss 0Share
Atomic StructureAtomic Orbitals138Choose the best answerAn atomic orbital is best described as:AA fixed circular path of an electronBA region around the nucleus where the probability of finding an electron is highCThe amplitude of an electron wave onlyDA path followed by the nucleus Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules139Choose the best answer4.6 g C₂H₅OH and 3.0 g C₂H₆ contain:ADifferent numbers of moleculesBDifferent masses of carbonCEqual numbers of moleculesD0.2 mol oxygen atoms in each Like 0 Discuss 0Share
GasesCharles's Law140Choose the best answerNitrogen occupies 20 L at 100 K. If it is heated to 300 K at constant pressure, what is the increase in volume?A80 LB20 LC40 LD60 L Like 0 Discuss 0Share