What is the difference in concentration of hydronium ions between pH 1 and pH 4?

Answer    "a salt" would be the best answerexplanationsalts can be defined as ionic compounds that are neither acids nor bases. nacl is an example of a salt, and its ionic.an enzyme is an organic compound which is covalently bonded, not ionically bonded.acids are generally held together by covalent bondsan element does not need any bonds to exist

Answerchemical energy;

Answerionic bond imfs are stronger than covalent;