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Karolina [17]
4 years ago
5

What metals having only 2 valence electrons​

Chemistry
1 answer:
evablogger [386]4 years ago
3 0
Alkaline earth metals
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The compound potassium sulfide is a strong electrolyte. Write the transformation that occurs when solid potassium sulfide dissol
Alex17521 [72]

Answer:

K₂S(s) → 2K⁺(aq) + S²⁻(aq)

Explanation:

A strong electrolyte is a compound that, in solution, dissociates completely. For a compound XₐYₙ that dissolves in water:

XₐYₙ(s) → aXⁿ⁺(aq) + nYᵃ⁻(aq)

Now, potassium sulfide (K₂S), as a strong electrolyte dissolves in water thus:

<em>K₂S(s) → 2K⁺(aq) + S²⁻(aq)</em>

<em></em>

I hope it helps!

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3 years ago
Calculate the molarity of 0.289 moles of FeC13 dissolved in 120 ml of solution
yanalaym [24]

Answer:

2.41 M

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The molarity is the moles of FeCl3 over the liters of solution. Since you're given mL you need to change it to L which is 0.12 L. 0.289 divided by 0.12 is your answer

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4 years ago
Whose work directly resulted in the development of and atomic model that has negative electrons stuck within a sea of positive m
raketka [301]
It is the work of J.J Thomson that directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material. His proposal was called the plum pludding model. He is the one who discovered electrons.
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3 years ago
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Need help with these questions ASAP please help !
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Answer:

I).... hydrogen gas

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At very high pressures, gases become_______ and will eventually________
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more dense;change to a liquid to a solid

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