If 80% of the Initial Amount of a Radioactive Substance

question 23

Essay

If 80% of the initial amount of a radioactive substance remains after 2 hours,find the decay constant and the half-life of the substance.Express your answers in terms of natural logarithms.

---

Definitions:

(S)-2-Iodopentane

A chiral compound characterized by having the S configuration at the chiral center, with a pentane backbone and an iodine substituent at the second position.

KCN

Potassium cyanide, a compound that contains a highly toxic cyanide ion (CN-) and is used in various industrial processes and in some chemical syntheses.

DMF

Dimethylformamide; an organic compound used as a solvent with a high boiling point.

Alkyl Bromides

Organic compounds containing a bromine atom covalently bonded to an alkyl group, often used in organic synthesis and as intermediates in the production of other chemicals.