Which of the following molecules is/are chiral? CI . Br* NH2 1 2 3 4 Select one: 2 only 3 only 4 only 1 only 1 and 3 What is the isomeric relationship between these two compounds? "CN OH OH CN Select one: Diastereomers. Completely different (i.e. not isomers). O Identical (i.e. not isomers). O Enantiomers. O Structural isomers. What is the definition of "isomers"? Select one or more: Non-superimposable mirror images Non-identical molecules with the same atom connectivity that are not mirror images Non-identical molecules with the same chemical formula Molecules that have the same atom connectivity, but different spatial arrangement of atoms Molecules with the same chemical formula where the atom connectivity is different A solution of compound 1 rotates plane polarised light by -87.7. By what angle does a solution of Compound 2, with the same concentration, rotate plane polarised light? OH OH 2 Ca. 0.0 O b. Not enough information to determine c. 175.4 C Od, -87.7 e, 87.7 * The melting point of Compound 1 is 18 C. What is the melting point of Compound 22 1 2 Select one: 18 C Not enough information to determine 0 C 36 C -18 C