A Radioactive Sample Has a Half-Life of 10 Min

question 19

Multiple Choice

A radioactive sample has a half-life of 10 min.What fraction of the sample is left after 40 min?

• A)1/2
• B)1/4
• C)1/8
• D)1/16

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Definitions:

Primary Amines

Organic compounds characterized by the presence of a \(NH_2\) group attached to a primary carbon atom, one that is only bonded to one other carbon.

Diazonium Salt

A class of organic compounds containing a nitrogen double bonded to a nitrogen atom which is also bonded to a benzene ring, significant in synthetic organic chemistry.

Nitrile

Organic compounds containing the cyano group (-C≡N), noted for their use in the production of rubber, resins, and pharmaceuticals.

Acid Chloride

A class of organic compounds derived from acids by replacing a hydroxyl group (-OH) with a chlorine atom, making them highly reactive.