Pre-Lab Exercises: For the following molecules draw the Lewis dot structure, assign electronegativity to each atom, determine if the bond is polar or non-polar, determine if the molecule is polar or non-polar (net dipole), what end of the molecule has the 8+ and which end has the 8-. (8 points) Water: Acetone: Ethanol: Hexanes: Safety briefing: (2 points) What are the hazards of working with hexanes, acetone, ethanol and water? What PPE should you be wearing during this lab