A Radioactive Substance Containing 4

question 87

Short Answer

A radioactive substance containing 4.0 × 10¹⁶ unstable atoms has a half-life of 2.0 days.What is its activity (in curies,Ci)after 1.0 day? (1 Ci = 3.70 × 10¹⁰ Bq)

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Definitions:

Preservative Solution

A chemical substance used to prevent decay or spoilage in foods, beverages, pharmaceuticals, or other perishable items.

Endocervix

The inner portion of the cervix, which is the canal connecting the uterus to the vagina.

Pap Smear

A screening procedure for cervical cancer involving the collection of cells from the cervix to detect abnormalities.

Naegele's Rule

A standard way of calculating the due date for a pregnancy, based on the woman's last menstrual period.