Lonic compounds molecules have strong forces of attraction between neighboring molecules. Which conclusion couid be drawn about
materials held together by ionic bonds?

A. These materials would have low densities as solids.

B. These materials would have very high boiling points.

C. These materials will likely be gases at room temperature.

D. These materials will likely be liquids at room temperature.

__can be defined as which velocity changes

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles