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stealth61 [152]
2 years ago
13

If we need 0.75 moles of ammonium hydroxide, how much is this in grams? The molar mass of ammonium hydroxide is 35.04g / (mol)

Chemistry
1 answer:
cestrela7 [59]2 years ago
5 0

Answer:

26.28

Explanation:

You multiply 35.04 by 0.75 which is equal to 26.28.

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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⁻

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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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