What is the atomic number of this atom?
O6
O 8
O 9
O 16

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1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged

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