A Sample of (Which Decays By $\beta$ -Emission)has an Activity of 10

question 12

Multiple Choice

A sample of (which decays by $\beta$ -emission) has an activity of 10.0 mCi.After 6.06 d it has an activity of 7.5 mCi.The half-life of ³²P is approximately

• A)3.03 d
• B)7.30 d
• C)12.1 d
• D)14.6 d
• E)24.2 d

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Definitions:

Ovum

The female reproductive cell or egg that, when fertilized by a sperm, can develop into a new organism.

Chromosomes

Rod-shaped structures in the nuclei of body cells, which contain all the genes and carry all the genetic information necessary to make a human being.

Monozygotic Twins

Twins who are genetically identical, resulting from the splitting of a single fertilized egg.

Genetically Identical

Describes organisms, such as twins or cells, that have exactly the same DNA.