The Half-Life of a Radioactive Sample Is 11

question 37

Multiple Choice

The half-life of a radioactive sample is 11.0 s. If the sample initially contains 25.0 g of the radioactive sample, how much remains after 54.0 s?

• A) 0.00338 g
• B) 0.0338 g
• C) 0.833 g
• D) 0.383 g
• E) 0.338 g

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Definitions:

Shaft

The long, slender portion of a long bone or hair.

Epidermis

The outermost layer of the skin, providing a waterproof barrier and creating our skin tone.

Hair Root

The part of the hair located below the surface of the skin, from which the hair grows.

Papillary Layer

The upper layer of the dermis that interdigitates with the epidermis, containing loose connective tissue and forming dermal papillae.