Yes it is, particularly if you don't know the woman's name.
yes sir/maam
I'm a women and personaly I love it when a guy says maam to me. However there are a group of women who are usualywho want to be younger and calling them maam sometime offends them because it can be a sign of old age, like they think only the old people get called maam. But for the most part when you call a women maam they think how polite and thoughtfull, so go a head and use it, you'll get more happiness then ridicule.
yes maam
hello madam how was your day bonjour Madame allait comment votre jour ?
yes sir//maam -Krista
Yes.
In general it can. Ma'am and Mam in this case are contractions of the honorific word madam
yes.
yes maam or sir he does
maam
Yes.
Yes, you would say "Chilean."