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Kipish [7]
3 years ago
5

Which model of the atom first introduced the idea of a nucleus?

Chemistry
2 answers:
ankoles [38]3 years ago
5 0
The answer is c.) Rutherford model
liq [111]3 years ago
5 0

the answer to your question is c. rutherfords model

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What is the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65% oxygen?
aliya0001 [1]
Li2CO3 ; variance= 1.26x10^-3
8 0
3 years ago
As the movement of molecules within a substance increases, describe the change in heat of the substance. Justify your response i
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How does a sugar solution become rock candy?
Hatshy [7]

Answer:

Explanation:

A supersaturated solution is unstable—it contains more solute (in this case, sugar) than can stay in solution—so as the temperature decreases, the sugar comes out of the solution, forming crystals. The lower the temperature, the more molecules join the sugar crystals, and that is how rock candy is created.

4 0
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 
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[OH-] = 2X
so by substitution 
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∴X^3 = 4.8x10^-17 / 4
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3 0
3 years ago
Please answer this.A) ____ N2 + ____ H2 → ____ NH3B) ____ KClO3 → ____ KCl + ____ O2C) ____ NaCl + ____ F2 → ____ NaF + ____ Cl2
Lady_Fox [76]

1) Decomposition reactions. In this type of reaction, a compound is broken down into simpler compounds.

AB\rightarrow A+B

Option B is a decomposition reaction

B) ____ KClO3 → ____ KCl + ____ O2

8 0
1 year ago
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