37.1×10−8M is the concentration of pb 2 ions in a solution prepared by adding 5. 00 g of lead(ii) iodide to 500. ml of 0. 150 m ki? [ k sp(pbi 2) =1. 4 × 10 –8] by common ion effect.
A phenomenon known as the "common ion effect" allows for the modification of a salt's molar solubility by adding another salt in which one ion dissociates in solution and maintains equilibrium with the undissociated salt.
The term "common-ion effect" describes the reduction in solubility of an ionic precipitate caused by the addition of a soluble molecule that shares an ion with the precipitate to the solution. Le principle for the equilibrium response of ionic association/dissociation leads to this behavior.
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10 decigrams are equivalent to 1 gram, so 2,100 grams are equivalent to 2100 x 10. This makes 21,000.
The accepted model of an atom was made by Schrodinger, which is known as the quantum mechanical model. Unlike Bohr's model, electrons are represented as a cloud and not small balls orbiting the nucleus. There is no define path of electrons in Schrodinger's model, but it can predict the odds of where an electron is located.
The answer to your question is then Electrons form a cloud around the nucleus.
The volume of air in the balloon is
V = 1 x 10⁶ L.
The density is
d = 1.20 g/L = 1.2 x 10⁻³ kg/L.
The mass of air is
m = V*d = (1 x 10⁶ L)*(1.2 x 10⁻³ kg/L) = 1.2 x 10³ kg
When the balloon s heated and the volume of air expands to 1.12 x 10⁶ L, the mass of air remains the same.
The new density, D, is given by
(1.2 x 10³ kg) = (D kg/L)*(1.12 x 10⁶ L)
D = (1.2 x 10³)/(1.12 x 10⁶) = 1.07 x 10⁻³ kg/L
Answer: 1.07 x 10⁻³ kg/L (or 1.07 g/L)
