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Butoxors [25]
3 years ago
5

Chemistry intro please help

Chemistry
1 answer:
evablogger [386]3 years ago
5 0

Answer:

The protons and electrons are attracted to each other because they are oppositely charged particles.

Explanation:

Protons have a positive charge and electrons have a negative charge, opposites attract.

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A sample of granite contains various oxides of silicon, aluminum, sodium, potassium, calcium, and iron. each of these oxides giv
Julli [10]
It would have a solubility substance and surface

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Help in my exam plzz now​
swat32

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What is a forensic paleontologist?<br>dum it down for me​
raketka [301]

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Simple Definition: A Tool for “Intelligence” and Investigation

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Intelligence is the ability to acquire and apply knowledge and skills while investigation is the action of investigating something or someone; formal or systematic examination or research.

4 0
2 years ago
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calculate the atomic mass of carbon if the two common isotopes of carbon have masses of 12.000 amu (98.89% abundance) and 13.003
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12.01 amu

Work:

(12.000 × .9889) + (13.003 × .0111) = 12.01

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6 0
3 years ago
In a liquid-liquid extraction, how can you experimentally tell which layer is organic and which layer is aqueous? Can you always
zysi [14]

Answer:

Explanation:

Liquid-liquid extraction is a very useful method to separate components from a mixture. It consists of separating one or several substances dissolved in a solvent by transferring them to another solvent insoluble or partially insoluble in the first. The transfer of matter is achieved by direct contact between the two liquid phases.

For the extraction process, the solution is placed in a separating funnel, a water-immiscible organic solvent is added (ethyl ether is the most used), the solution with the compound to be separated, the funnel is covered and the funnel is top. Then it shakes. Depending on the solubilities and density, different layers are observed. The denser the compound, the more it will sink.

Since the organic compound is usually much more soluble in ether than in water, most of the organic compound will be dissolved in the ether phase (upper phase) and inorganic salts, which are not soluble in ether, will remain in the aqueous phase ( lower phase). Subsequently, by separating the separating funnel the two phases are separated, the organic phase is collected.

Occasionally, after stirring, the two immiscible liquids do not separate sharply, forming an emulsion in the intermediate zone. This is called the colloidal suspension of a liquid in another (system consisting of two or more phases, usually a liquid and another dispersed in the form of generally very fine solid particles). One of the reasons for the formation of an emulsion is when the two phases have similar densities. Then the relative density of the organic solvent and water cannot always be relied upon, although there are methods to facilitate the complete separation of the two phases.

7 0
3 years ago
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