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kipiarov [429]
2 years ago
13

How many particles are in 13.5 grams of Beryllium ?

Chemistry
2 answers:
cupoosta [38]2 years ago
6 0
9x10^23 .. this the answer
Marina86 [1]2 years ago
4 0

Explanation:

I don't know this answer what Hydrogen Helium lithium

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Elements in Group 18 are known
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C the number and placement of the electrons

Explanation:

Elements react with one another because they want to achieve a full valence shell of electrons. The noble gases already have a full valence shell of electrons, so they are unlikely to react with other elements.

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What are conclusions based on?
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They're based on the results of your testing.
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I need help with this question plz ASAP
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D

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The term _____ describes a substance that can act as both an acid and a base.
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The term amphoteric describes a substance that can act as both an acid and a base.

8 0
3 years ago
Write the balanced half equation of iron 2 and permanganate in a solution of acid. Show all of your work.
Aleks [24]

Answer:

5Fe⁺² + MnO₄⁻ + 8H⁺ => 5Fe⁺³ + Mn⁺² + 4H₂O

Explanation:

Fe⁺² + MnO₄⁻ +  H⁺ => Mn⁺² + Fe⁺³ +  H₂O

5(Fe⁺² => Fe⁺³ + 1e⁻)      =>                        5Fe⁺² => 5Fe⁺³ + 5e⁻

<u>MnO₄⁻ + 5e⁻ => Mn⁺²    =>   MnO₄⁻ + 8H⁺ + 5e⁻ => Mn⁺² + 4H₂O</u>

                                      =>  5Fe⁺² + MnO₄⁻ + 8H⁺ => 5Fe⁺³ + Mn⁺² + 4H₂O

6 0
2 years ago
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