According to one acid-base theory, water can act as a base because a water molecule can 1) donate an H+ ion
2) accept an H+ ion
3) donate an H- ion
4) accept an H- ion

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

When a scientific theory has been tested and proved by the scientific community, it becomes a law

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.