What forces typically hold ionic solids together? A. Electrostatic forces
B. Metallic bonds
C. Intermolecular forces
D. Covalent bonds

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.