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3 years ago

represent rutheniums first 36 electrons using the chemical symbol for krypton written inside the brackets

Chemistry

2 answers:

kirza4 [7]3 years ago

7 0

Answer:

[kr] hd^75s^1

Explanation:

11Alexandr11 [23.1K]3 years ago

5 0

Answer:

This is the answer. Hope it is helpful

Explanation:

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Answer:

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Explanation:

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2 years ago

The solubility product of PbI2 is 7.9x10^-9. What is the molar solubility of PbI2 in distilled water?

Agata [3.3K]

Answer: The molar solubility of $PbI_2$ is $1.25\times 10^{-3}mol/L$

Explanation:

Solubility is defined as the maximum amount of solute that can be dissolved in a solvent at equilibrium.

Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.

The balanced equilibrium reaction for the ionization of calcium fluoride follows:

$PbI_2\rightleftharpoons Pb^{2+}+2I^-$

s 2s

The expression for solubility constant for this reaction will be:

$K_{sp}=[Pb^{2+}][I^-]^2$

We are given:

$K_{sp}=7.9\times 10^{-9}$

Putting values in above equation, we get:

$7.9\times 10^{-9}=(s)\times (2s)^2\\\\7.9\times 10^{-9}=4s^3\\\\s=1.25\times 10^{-3}mol/L$

Hence, the molar solubility of $PbI_2$ is $1.25\times 10^{-3}mol/L$

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3 years ago

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2 years ago

Which represents the greatest time frame in which a short-term environmental change can occur? A)in days. B)in minutes. C)over h

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Explanation:

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3 years ago