Yes, the Prologue reappears to open Act II
foreshadowing
Love.
The chorus foresees that Romeo and Juliet's love will end in tragedy because of the feud between their families, the Montagues and Capulets. The chorus hints at the obstacles and conflicts that will ultimately lead to their untimely deaths.
framework
The chourus describes Romeo and Juliet as star crossed lovers.
Two Shakespearean examples: Henry V and Romeo & Juliet
The chorus.
Stars are a recurring motif in the play. It depends what you call a motif.
The chorus, at the beginning of Act II.
Romeo and Juliet will die. Their families will reconcile as a result.
The key line is the one which says that Romeo and Juliet "will, with their death, bury their parents' strife." The words "their death" should be a giveaway. "Strife" means fighting, so you should be able to figure out what will happen to the fight between their families.
The line "temp'ring extremities with extreme sweet" is spoken by Romeo in William Shakespeare's play "Romeo and Juliet." In this scene, Romeo is describing how balancing extremes of emotion with acts of sweetness can bring about harmony and peace.