PRACTICE PROBLEM 1. A gas at expands from 2.0L to 6.0L at a constant pressure of 912 mmHg. If Q, was zero in the process, what would be the change in
internal energy?

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

b. a lightning bug, plug of grass, and a worm

answerdmitry mendeleyev made a workable classification of the elements