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g100num [7]
3 years ago
13

Which of the following liquids has the lowest viscosity?

Chemistry
1 answer:
zavuch27 [327]3 years ago
7 0

Answer:

Ether and acetone are the liquids with the lowest viscosities at room temperature.

Explanation:

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The half-life of radium-226 is 1590 years. if a sample contains 100 mg, how many mg will remain after 1000 years?
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a=64.7mg

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Hello,

In this case, we need to remember that for the required time for a radioactive nuclide as radium-226 to decrease to one half its initial amount we are talking about its half-life. Furthermore, the amount of remaining radioactive material as a function of the half-lives is computed as follows:

a=a_0(\frac{1}{2} )^{\frac{t}{t_{1/2}} }

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a=100mg(\frac{1}{2} )^{\frac{1000years}{1590years} }\\\\a=64.7mg

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