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IRINA_888 [86]
3 years ago
9

Find the square of (a+b) please answer with method​

Chemistry
2 answers:
nataly862011 [7]3 years ago
5 0
(A^2+b^2)


Hope this helps
olga2289 [7]3 years ago
3 0

Answer:

{a}^{2}  + 2ab \:  +  {b}^{2}

Explanation:

{(a + b)}^{2}

(a + b)(a + b)

{a}^{2}  + ab  \:  +  \: ab \:  +  {b}^{2}

{a}^{2}  + 2ab \:  +  {b}^{2}

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The sp of pbbr2 is 6. 60×10−6. what is the molar solubility of pbbr2 in pure water?
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Ksp of PbBr₂ is 6.60 × 10⁻⁶. The molar solubility of PbBr₂ in pure water is 0.0118M.

Ksp or Solubility Product Constant is an equilibrium constant for the dissociation in an aqueous solution.

Molar solubility (S) is the concentration of the dissolved substance in a solution that is saturated.

Let the molar solubility be S upon dissociation.

PbBr₂ or Lead Bromide dissociates in pure water as follows:

                          PbBr₂ ----------> Pb⁺² + Br⁻

                                                     S      2S

Ksp = [Pb⁺²] [ Br⁻]

Ksp = (S) (2S)²

Ksp = 4S³

6.60 × 10⁻⁶ = 4S³

S = 0.0118M

Hence, the Molar solubility S is 0.0118M.

Learn more about Molar solubility here, brainly.com/question/16243859

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HCl conc.= 6.0mol/L

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From the dissociation of HCl= 1 mole H+ and 1mol Cl-, which is equivalent stoichiometrically in concentration to that of 1 mol HCl,

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