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Related Concept Videos

Precipitation of Ions03:11

Precipitation of Ions

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Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
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Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

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Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
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Intermolecular Forces03:13

Intermolecular Forces

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Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
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Ions and Ionic Charges03:27

Ions and Ionic Charges

68.8K
In ordinary chemical reactions, the nucleus — which contains the protons and neutrons of each atom and thus identifies the element — remains unchanged. Electrons, however, can be added to atoms by transfer from other atoms, lost by transfer to other atoms, or shared with other atoms. The transfer and sharing of electrons among atoms govern the chemistry of the elements. During the formation of some compounds, atoms gain or lose electrons to form electrically charged particles called...
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Common Ion Effect03:24

Common Ion Effect

42.1K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
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Updated: Sep 4, 2025

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
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Water-Group Pickup Ions From Europa-Genic Neutrals Orbiting Jupiter.

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Area of Science:

  • Planetary Science
  • Space Physics
  • Plasma Physics

Background:

  • Icy moons continuously release gases, forming neutral toroidal clouds around Jupiter.
  • These clouds offer insights into moon composition and magnetospheric processes.

Purpose of the Study:

  • To confirm the presence of a neutral hydrogen toroidal cloud around Jupiter.
  • To estimate the molecular hydrogen (H2) neutral loss rate from Europa.

Main Methods:

  • Observations of H2+ pickup ions in Jupiter's magnetosphere.
  • Analysis of ion density ratios (H2+/H+) and radial distribution.

Main Results:

  • First detection of H2+ pickup ions in Jupiter's magnetosphere (13-18 RJ).
  • Confirmed a neutral H2 toroidal cloud with H2+/H+ density ratio of 8 ± 4%.
  • Derived Europa's H2 neutral loss rate at 1.2 ± 0.7 kg s-1.

Conclusions:

  • The study confirms the existence of a neutral H2 cloud, likely originating from Europa.
  • Provides the most direct estimate of Europa's H2 neutral loss rate.
  • Highlights the significance of ion composition and neutral clouds in satellite-magnetosphere interactions.