CHEMISTRY MIDDLE SCHOOL

Which type of crystal is typified by a sea of delocalized electronssurrounding the lattice?
O A. lonic
B. Metallic
OC. Macromolecular
D. Chemical
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Answers

Answer 1
Answer:

The correct answer is option B. Metallic.

What explains the structure of metals and delocalized electrons?

Metal is composed of a huge structure of atoms arranged in a regular pattern. Electrons from the outer shell of a metal atom are delocalized and can move freely throughout the structure. This sharing of delocalized electrons results in strong metal bonds.

Metallic bonds are electrostatic attraction between metal cations and the negatively charged ocean of delocalized electrons. The sea of ​​delocalized electrons contains only valence electrons, not core electrons.

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Answer 2
Answer:

B.metallic is the answer hope this helped

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Salt seems to disappear when it is poured into water. Use the terms mixture,solution, and dissolve to explain what happens

Answers

To solve this we must be knowing each and every concept related to solution. Therefore, the term used for the given salt in water is solution.

What is solution?

A solution is a uniform mixing comprising two or more parts. It possesses particle-level homogeneity. People usually conceive of it as a liquid containing a solid, liquid, or gas dissolved inside it. This is not totally correct.

The component of such a solution that absorbs the other component is referred to as the solvent. The majority of the solution is made up of a solvent. A sugar solution in water, for example, is solid inside the liquid. Sugar is indeed the solute in this case, while water is indeed the solvent. The term used for the given salt in water is solution.

Therefore, the term used for the given salt in water is solution.

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The salt desolves into the water which forms a solution which is called a mixture.

Why don't molecular compounds conduct electricity when dissolved in water?

Answers

they do conduct electricity. they don’t conduct electricity when solid

Answer:

Person above me is correct

Explanation:

be nice to eacher

1. Given the following equation:2C4H10 +13O2 --->8CO2 +10H2O
Show what the following molar ratios should be.
a. C4H10 / O2 2:13 (example) b. O2 / CO2
c. O2 / H2O
d. C4H10 / CO2
e. C4H10 / H2O

also give an explanation

Answers

Answer:

a. C₄H₁₀/O₂    =  2:13 (example)

b. O₂/CO₂      = 13:8

c. O₂/H₂O      = 13:10

d. C₄H₁₀/CO₂ =  2:8

e. C₄H₁₀/H₂O =  2:10

Explanation:

2C₄H₁₀ + 13O₂ ⟶ 8CO₂ + 10H₂O

The molar ratios are the same as the coefficients in front of the formulas.

As an aqueous solution becomes more acidic the hydroxide ion

Answers

An aqueous solution becomes more acidic, as the hydroxide ion concentration decreases. Being acidic, the substance can readily donate hydrogen ions or H+. Therefore, the solution contains more hydrogen ions than hydroxide ions.

Name two ways the archaea differ from bacteria

Answers

apart from their habits , bacteria and archea differ in cell wall structure and membrane lipid composition . A ll bacteria have peptidoglycans in the cells wall where as the archea do not . both also are different in the RNA polymerases and thus in their protein synthesis .I  hope that can help you !!:))

What is the shortest half life

Answers

Answer:

Hey!

Your answer is element A

Explanation:

Using the graph, the element A's emission of radioactive particles ends approximately after 6 years...

A HALF-LIFE IS "HALF" OF THAT TIME PERIOD!

So if the radiation goes for 6 years the half-life is 6 divided by two which gives you 3 years!

The rest however have a longer half-life...

Because they all end at 14 yrs so their half-life in 7 years!

HOPE THIS HELPS!!
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