Why does the Torah refer to Chukos ha'Goy (in the singular) and not 'ke'Chukos ha'Goyim'?
Oznayim la'Torah: Many nations may have lived in Eretz Cana'an, each with its own religion and customs. When it came to the abominations mentioned in the current Parshah however, they were all united - as one!
What are "Chukos ha'Goy asher Ani Meshale'ach Mipneichem"?
Refer to 18:3:2:1-3, 18:3:151:1-3 and the notes there.
What are the connotations of "va'Akutz Bam"?
Rashi (citing the Sifra): It is a Lashon of disgust 1 - like a person who is disgusted with his food.
Moshav Zekenim: I detested the [seven Cana'ani] nation[s], but not the other nations.
Targum Onkelos and Targum Yonasan: 'And I pushed them away' or distanced them (from Me).
Rashi: As in Toldos Bereishis, 27:46 - "Katzti be'Chayai" (and "Vayakutzu Mipnei B'nei Yisrael" in Sh'mos, 1:12)/