StoichiometryAvogadro Constant2101Choose the best answerNA, the Avogadro constant, is equal to the number of:AAtoms in 1 g HeBElectrons needed to deposit 24.3 g Mg from Mg²⁺CMolecules in 35.5 g Cl₂DAtoms in 24.3 g Mg Like 0 Discuss 0Share
Industrial ChemistryAuxochromes2102Choose the best answerWhich group is classified as an auxochrome?A–N=N–B–NO₂C–OHD–C=O Like 0 Discuss 0Share
Chemical BondingBond Formation and Stability2103Choose the best answerAccording to the simplified octet-based bonding model, chemical bonding generally:AHelps attain stable electronic configurationBLowers the energy of the systemCIncreases stabilityDAll of these Like 1 Discuss 0Share
Fundamental Principles of Organic ChemistryRacemic Mixture and External Compensation2104Choose the best answerA racemic mixture is optically inactive because of:AAbsence of chiral moleculesBExternal compensationCInternal compensationDResonance Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes2105Choose the best answerWhich statement about isotopes is correct?AThey have the same mass number but different atomic numbersBThey have the same atomic number but different mass numbersCThey have the same number of neutrons but different protonsDThey have different atomic numbers and different chemical identities Like 0 Discuss 0Share