If the half-life is 5 minutes, then 30 minutes is equivalent to 6 half-lives. So, after six successive half-lives, the 400 mg of the radioisotope would have a mass of 400(0.5)⁶ = 6.25 mg.

Thus, A would be the correct answer choice here.

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3 years ago

Music//

valina [46]

Thee answer to this question is D: increased the technical demands on musicians.

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3 years ago

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Summarize each of the theories of the neo-freudians Alfred Adler, Karen Horney, and Carl Jung.

Vika [28.1K]

<h3>Summarize each of the theories of the neo-freudians Alfred Adler, Karen Horney, and Carl Jung.</h3>

(The answer is in the picture)

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3 years ago