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riadik2000 [5.3K]
3 years ago
7

A clear liquid in an open container is allowed to evaporate. After three days, a solid is left in the container. Was the clear

Chemistry
1 answer:
Mashutka [201]3 years ago
7 0

The liquid did not chemically bond after 3 days, therefor it is a mixture.

Hope this helps!

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When non metals form ions what ions do they tend to form?
Maurinko [17]
Non-metals have a larger number of outer electrons called valence electrons. Therefore, it is easier for them to "steal" valance electrons from other elements with fewer valence electrons(usually metals) 

For example, Chlorine(Cl) has 7 ve-. When forming an ion it will steal one electron from a metal. and gain a charge of -1. Because the ion is NEGATIVELY charged, it will be called an anion. 

Nonmetals form anions.

Vocab:
cation: 
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4 years ago
The 3 isomers of pentane have different....
DanielleElmas [232]
I believe the correct answer from the choices listed above is option 4. The 3 isomers of pentane have different structural formulas. <span>An </span>isomer<span> is a molecule with the same molecular formula as another molecule, but with a different chemical structure. Hope this answers the question.</span>
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Can someone help me please!!
ira [324]

Answer:

1. AgNO₃ (aq) + NaCl (aq) ----> NaNO₃ (aq) + AgCl (s)

2. Li₂SO₄ (aq) + BaCl₂ (aq) ----> 2 LiCl (aq) + BaSO₄ (s)

3. 2 NaOH (aq) + MgCl₂ (aq) ----> 2 NaCl (aq) + Mg(OH)₂ (s)

Explanation:

The reaction involving the mixing of two soluble solutions to produce a precipitate is known as a precipitation reaction.

A precipitation reaction is double-replacement reaction (a reaction that exchanges the cations or the anions of two ionic compounds) in which one product is a solid precipitate.

Precipitation reactions at useful in the identification of various ions present in a solution. In order to predict the reactions that will produce a precipitate, solubility rules as given in the solubility table below can be used.

From the tables, the reactions that will produce a precipitate, as well as their balanced molecular equations are as follows:

1. AgNO₃ (aq) + NaCl (aq) ----> NaNO₃ (aq) + AgCl (s)

2. Li₂SO₄ (aq) + BaCl₂ (aq) ----> 2 LiCl (aq) + BaSO₄ (s)

3. 2 NaOH (aq) + MgCl₂ (aq) ----> 2 NaCl (aq) + Mg(OH)₂ (s)

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3 years ago
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Answer:

By bonding due to the attractive forces

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3 years ago
Why must a chemistry experiments performed in a well ventilated room?
Elina [12.6K]
The best answer would be because there might be an accident.
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3 years ago
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