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kirill115 [55]
2 years ago
9

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
Chemistry
2 answers:
kondaur [170]2 years ago
5 0

Answer: D. 48.75

Explanation: just took the test

maw [93]2 years ago
5 0

Answer:

D

Explanation:

I got this question right on my test.

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What is the net charge of the ionic compound calcium fluoride
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  • <em>The net charge of the ionic compound calcium fluoride is </em><u><em>zero (0).</em></u>

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<em>Ionic compounds,</em> such as covalent ones, have zero net charge; this is, they are neutral.

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