A Latin phrase for a thing which has been done/cannot be changed

1. What is the Latin for nothing changes if nothing changes?
2. What is the Latin phrase something for nothing?
3. What does the Latin phrase et al mean?
4. What is Latin ID EST?

What is the Latin for nothing changes if nothing changes?

Latin translation: Nihil mutavit

as simple as that :) Hope it helps.

What is the Latin phrase something for nothing?

quid pro quo in Context

"In Hollywood no one does something for nothing," said the director, adding "there's always a quid pro quo involved."

What does the Latin phrase et al mean?

Et al. is an abbreviation for et alia (neuter plural). But it can also be an abbreviation for et alii (masculine plural), or et aliae (feminine plural). This phrase means “and others.” Most commonly, et al.

What is Latin ID EST?

id est Phrase

"That is (to say)" in the sense of "that means" and "which means", or "in other words", "namely", or sometimes "in this case", depending on the context.