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Alexus [3.1K]
3 years ago
14

PLEASE HELP PICTURE BELOW

Chemistry
1 answer:
seraphim [82]3 years ago
8 0

Answer:

A.      

sorry if  it's wrong

Explanation:

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Setler [38]

Answer:

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3 years ago
Calculate the molar solubility of fe(oh)2 in pure water. (the value of ksp for fe(oh)2 is 4.87×10−17.)
rosijanka [135]
When we have this balanced equation for a reaction:
Fe(OH)2(s) ↔ Fe+2  + 2OH-

when Fe(OH)2 give 1 mole of Fe+2 & 2 mol of OH-
so we can assume [Fe+2] = X and [OH-] = 2 X
 when Ksp = [Fe+2][OH-]^2
and have Ksp = 4.87x10^-17 
[Fe+2]= X
[OH-] = 2X
so by substitution 
4.87x10^-17 = X*(2X)^2
∴X^3 = 4.8x10^-17 / 4
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3 0
3 years ago
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marissa [1.9K]
I think it's reactivity. but i'm not sure.
8 0
3 years ago
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In a series circuit there are 17 light bulbs, each providing 1 ohm of resistance. What is the total resistance?
Sauron [17]

Answer:

17 ohms

Explanation:

Given that,

In a series circuit there are 17 light bulbs, each providing 1 ohm of resistance.

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Hence, the total resistance is 17 ohms. Hence, the correct option is (d).

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