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3 years ago

8

A sample of polonium-210 has an initial mass of 390 milligrams (mg). If the half-life of polonium-210 is 36 days, how many mg of

the sample remains after 72 days?
A.
392 mg

B.
195 mg

C.
97.5 mg

D.
48.75 mg

1 answer:

Over [174]3 years ago

3 0

Answer:

C

Explanation:

I got this question right on my test.

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here, it looks like I have done wrong.

But all of the answers in option are wrong.

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And in the question, gas has higher rate of diffusion than hrdrogen. So it should have molar mass less than hydrogen.

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1. Learn more about Molarity brainly.com/question/9183916

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