Which one of the following statements about sodium chloride is incorrect a) within the crystal, each sodium ion is surrounded by chloride ions b) each sodium ion is attracted to chloride ions because of their opposite charges c) each sodium ion is tightly bonded to only one chloride ion, forming molecules of nacl, the "building blocks" of the crystal d) the bonding in sodium chloride crystals is strong

Acontrol during an experiment. might change remains constant does not exist does change

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.