How many moles of each element are there in the following compound,
(NH4)2SO4?

Smoking cigarettes may be the greatest of threats
So the story's pretty gory as far as cancer gets
And as your tissue breaks down and you're dying and crying
You'll be counting up the chemicals that that stogie is frying

And as you're chomping down those Big Macs, and fry stacks, and sugar snacks
You should go see a Psychoquack for that Arterial Plaque
It's addicting, afflicting, conflicting, and restricting
Do you understand this picture I'm depicting?

(If you need more than two stanzas, let me know.)