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Tju [1.3M]
3 years ago
5

What is the pH of a 6.4*10-10 m oh- solution?

Chemistry
1 answer:
egoroff_w [7]3 years ago
8 0
PH: 4.80617997
pOH: 9.1938200
[H+]: 1.562
[OH-] 6.4E-10
Acid
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How many potassium atoms are in 250.0 grams of potassium?
loris [4]

Hi!


The correct option would be 3.85x10^(24)


To find the number of atoms in 250g of potassium, we need to first calculate the number of atoms in


1 mole of Potassium = 39g which contains 6.022x10^(23) atoms of K

<em>(Avogadro's constant value for the amount of molecules/atoms in one mole of any substance)</em>

<em>Solution</em>

So as 39g of Potassium contains 6.022x10^(23) K atoms

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So 250g of Potassium would contain 1.544x10^(22) x 250 = 3.86x10^(24) atoms

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3 years ago
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