Do all irreversible reactions go to completion? If so why?

True

Explanation:

All irreversible reactions go to completion because the process cannot proceed in the backward direction.

A reversible reaction is one that does not go into completion in one direction.

An irreversible direction completely uses up the reactants to form the products and goes into completion.

These reactions can only proceed in one direction and not both.

the formula would be mgso4

mgso[subscript]4

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).