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3 years ago

What is the correct answer?

Chemistry

2 answers:

Valentin [98]3 years ago

7 0

Answer: First Choice

Explanation:

It is the first choice because molecules tend to decrease motion when they are being converted into a solid but when in liquid or vapor they are increased by the moving atoms grouped and separated from each other.

Ivahew [28]3 years ago

3 0

C - bc as the water boils the cold water particles melt and become the hot water particles!

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What are the reactants in a neutralization reaction? two elements an acid and a base an element and a compound a salt and water

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3 years ago

Iron fluoride (FeF2) dissociates according to the following equation:

melomori [17]

Answer:

S = 0.788 g/L

Explanation:

The solubility product (Kps) is an equilibrium solubization constant, which can be calculated by the equation:

$Kps = \frac{[product]^x}{[reagent]^y}$

Where x and y are the stoichiometric coefficients of the product and the reagent, respectively. Because of the aggregation form, the concentration of solids is always equal to 1 for use in this equation.

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$Kps = [Fe^{+2}].[F^-]^2\\\\2.36x10^{-6} = x(2x)^2\\\\2.36x10^{-6} = 4x^3\\\\x^3 = 5.9x10^{-7}\\\\x = \sqrt[3]{5.9x10^{-7}} \\\\x = 8.4x10^{-3} mol/L$

So, to calculate the solubility (S) of FeF2, which is in g/L, we multiply this concentration by the molar mass of FeF2, which is:

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F = 19 g/mol

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So,

[tex]S = 8.4x10^{-3}x93.8

S = 0.788 g/L

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