How many moles in Co are there in 6 billion Co atoms

1 answer:

3 0

Hello there!

 Use Avogadro's number, 1 mol = 6.02 x 10^23 atoms.
Convert atoms to moles and you get:

9.97x10^(-15) moles Co

Hope This Helps You!
Good Luck :)

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What is the concentration of silver ions where silver iodide, Agl, is in a solution of hydroiodic

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Answer:

$[Ag^+]=2.82x10^{-4}M$

Explanation:

Hello there!

In this case, for the ionization of silver iodide we have:

$AgI(s)\rightleftharpoons Ag^+(aq)+I^-(aq)\\\\Ksp=[Ag^+][I^-]$

Now, since we have the effect of iodide ions from the HI, it is possible to compute that concentration as that of the hydrogen ions equals that of the iodide ones:

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$Ksp=8.51x10^{-17}=(x)(x+2.82x10^{-4})$

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Arrange the elements in order of increasing ionization energy. Use the periodic table to identify their positions on the table.

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