Be sure to answer all parts. find the molar solubility of bacro4 (ksp= 2.1 × 10−10) in (a) pure water × 10 m (b) 1.6 × 10−3 m na2cro4 × 10 m

The molar solubility of BaCrO₄ in pure water is 1.4 × 10⁻⁵ M, while the molar solubility in 1.6 × 10⁻³ M Na₂CrO₄ is 1.3 × 10⁻⁷ M.

Let's consider the solution of BaCrO₄.

BaCrO₄(s) ⇄ Ba²⁺(aq) + CrO₄²⁻(aq)

To find the molar solubility (S) in pure water, we need to make an ICE chart.

        BaCrO₄(s) ⇄ Ba²⁺(aq) + CrO₄²⁻(aq)

I                                0                 0

C                              +S               +S

E                               S                  S

The solubility product constant is:

To calculate the molar solubility of BaCrO₄ in 1.6 × 10⁻³ M Na₂CrO₄, we need to consider the Na₂CrO₄ that is a strong electrolyte. Thus, when making the ICE chart, the initial concentration of CrO₄²⁻ will be 1.6 × 10⁻³ M.

   BaCrO₄(s) ⇄ Ba²⁺(aq) + CrO₄²⁻(aq)

I                                0          1.6 × 10⁻³

C                              +S               +S

E                               S        1.6 × 10⁻³ + S

The solubility product constant is:

Since 1.6 × 10⁻³ >>> S, 1.6 × 10⁻³ + S ≅ 1.6 × 10⁻³

The molar solubility of BaCrO₄ in pure water is 1.4 × 10⁻⁵ M, while the molar solubility in 1.6 × 10⁻³ M Na₂CrO₄ is 1.3 × 10⁻⁷ M.

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a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

a) the particles of the chair are strongly held together.