A lab sample of X-23 is decaying and you need to know how long the sample has been left out of protection. The ratio of X-23 to X-20 is measured to be approximately 1.5% of the ratio measured in a new sample. The half-life of X-20 is 57 days. Determine how long this sample sat in the lab.

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