PE, what is the average g/sqft of modern emulsions?

I found the source. Haist Vol. 2, p. 297, in discussion of the creation of a film with incorporated developers: "A fine grain silver bromoiodide emulsion...was coated on paper base at a coverage of 1900 sqft per mole of silver."

So, I flipped the 9 upside down.

When I heard this figure I was surprised how far a mole can go.

Gerald, I think it's too much to ask everyone to know all the specific jargon of every discipline. Isn't that why there are standard units in the first place? So that scientists can communicate across disciplines and, believe it or not, laypersons can understand and make use of scientific discoveries--if scientists are generous enough to parse them out.