Match the following aqueous solutions with the appropriate letter from the column on the right. 1. 0.13 m Cal2 2. 0.22 m NaCl A. Lowest freezing point B. Second lowest freezing point 3. 0.14 m Mn(NO3)2 C. Third lowest freezing point 4. 0.35 m Ethylene glycol(nonelectrolyte) D. Highest freezing point

H-N N. H. 4-0 H. H. H-N v-H H. Write in the spaces below the full name of the Greek letters which correspond to the torsion angle (dihedral angle) represented by the: Red arrow: angle Green arrow: angle

Figure 3-1 1 А. СНЗ с. CHz CH3 CH-CH-CH3 CH ₂ CH 3 в. н D. CH CH3 . тоен - сненсне енз СнЗ

3. Draw the dash-wedge structure for the following molecules. 1 C₂H₂ C₂H₂ S H CH₂ 1 H Br H Cl * H H 4. Arrange the structures in the increasing order of stability CH₂ C₂H₂ C₂M₂ C₂H₂ H C₂H₂ *馬來西 H C₂H₂ H C₂H₂ CHy CH₂ IV || |||