9 points
As a latex and formatting snob, I will only say element abbreviations should not be italicized. H$_2$SO$_4$ is how I usually do formulas.
4 points
*
5 points
Prof probably pasted these in and the $s got automatically escaped or something.
2 points
1 point
*
Looks like LateX is not supported but Markdown is. Single underscore leads to italic text. _some text_ will render as some text. Two underscores will render the text bold in markdown. __example__: example
3 points
Not sure that explains the working example in the picture. If it was markdown it would have had to changed font, italized, and added a subscript.
19 points
When LateX doesn’t translate to HTML
19 points
2 points