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Alik [6]
3 years ago
12

Which is a characteristic of a mixture?

Chemistry
1 answer:
Fudgin [204]3 years ago
3 0

Answer:

A mixture is the blending of two or more dissimilar substances. A major characteristic of mixtures is that the materials do not chemically combine. Mixtures can be divided into those that are evenly distributed (homogeneous) and those that aren't (heterogeneous).

Explanation:

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An ice sculpture melts into a puddle of water. What is true of this reaction?
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Energy has been added to the system for the reaction to occur.
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4 years ago
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A chemical bond joins atoms or electrons? together in a molecule
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Electrons basically ARE the chemical bond.  The atoms are joined together by the bonds.
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Unabbreviated electron configuration of magnesium
fenix001 [56]

Answer:

Mg₁₂ = 1s² 2s² 2p⁶ 3s²

Explanation:

Abbreviated and unabbreviated electronic configuration:

The abbreviated electronic configuration uses the noble gas configuration i.e complete electronic shells. For example, the atomic number of neon is ten and magnesium is twelve. The abbreviated electronic configuration of magnesium is written by using the neon abbreviation in following way:

The electronic configuration of neon is given below:

Ne₁₀ = 1s² 2s² 2p⁶

The abbreviated electronic configuration of magnesium:

Mg₁₂ = [Ne] 3s²

While the unabbreviated electronic configuration is written without using noble gas electronic configuration.

Unabbreviated electronic configuration of magnesium:

Mg₁₂ = 1s² 2s² 2p⁶ 3s²

5 0
4 years ago
Consider the reaction below. 2K+Br2------>2K+ +2Br-
sergeinik [125]
Answer: only Br2.

Justification.

In  a chemical reaction the element that gains electrons experiments a reduction in its oxidation state, that is why it is said that it is reduced.

So, to know what element is being reduced you need to calculate the oxidation states of the elements involved.

Here I indicate the oxidation states of each element if the reaction putting them inside parenthesis:

Reactants side          Products side

K (0)                           K (1+)
    
Br (0)                          Br(1-)

So, K lost one electron, increasing its oxidation statefrom  0 to 1+, meaning that it is being oxidized.

And, each atom of Br gained one electron, reducing its oxidation state from 0 to 1-, meaning it is being reduced.

Therefore, the answer is that Br2 is the substance being reduced.
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How can carbon 14 and carbon 12 be the same element when both have the same number of protons (6 protons) but different number o
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Carbon 14 and carbon 12 are the same element because they contain the number of proton in the periodic table. but the different in number (14 and 12) is from the neutron
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