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Tasya [4]
4 years ago
7

which statement is true about the elements in a compound? They maintain their chemical properties. They are composed of many mix

tures. They can be separated by physical methods. They can be sperarated by chemical methods.​
Chemistry
2 answers:
gizmo_the_mogwai [7]4 years ago
6 0

Answer:

they can be separated by chemical methods

Explanation:

follow me

JulsSmile [24]4 years ago
3 0

Answer:

They can be separated by chemical methods

Explanation:

The definition of Compounds states: a thing that is composed of two or more separate elements; a mixture.

Compounds are typically produced from chemical reactions and are classified by the different types of bonds such as Ionic, Covalent, and Metallic bonds.

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Each element has a unique name. How else can
Otrada [13]

Answer:

C. by its chemical Symbol

Hope this helps!

5 0
3 years ago
Successive ionization energy for Cu²+​
kogti [31]

Answer:

Here's what I get  

Explanation:

The ionization energy (I) is the energy required to remove an electron from an atom in the gaseous phase.

You can remove electrons in succession and measure the energies required as I₁, I₂, I₃, etc.

Thus, the removal of two electrons from Cu gives you Cu²⁺.

I found the ionization energies of Cu and used them to create those of Cu²⁺ (see table and graph below).

The electron configuration of Cu²⁺ is

Cu²⁺: 1s² 2s²2p⁶ 3s²3p⁶ 3d⁹

You can remove the nine 3d electrons and then there is a sudden jump from I₉ to I₁₀ as you break into the filled [Ar] configuration.

Similarly, there is big jump from I₁₇ to I₁₈ as you break into the filled [Ne] configuration.

8 0
3 years ago
_____ compounds include a prefix on the first and second elements and a suffix on the second element, whereas _____ compounds do
Anit [1.1K]

Answer:

Molecular compound and ionic compound

Explanation:

Molecular compounds include a prefix on the first and second elements and a  suffix on the second element, whereas Ionic compounds do not have prefixes and only include a suffix on the second element.

4 0
3 years ago
Biological membranes are present in all cells, and they make up the endomembrane system of eukaryotic cells. Among other functio
docker41 [41]

Answer:

The correct option for question 1 would be:

a bilayer containing lipids with hydrophilic head groups pointing inward and hydrophobic tail groups facing the solvent (extracellular fluid and cytosol).

The correct option for question number two would be: proteins.

Explanation:

The membranes present phospholipids that act as selective barriers between the intracellular and extracellular space, allowing an internal balance in relation to the external one.

Its conformation is mostly phospholipids, fatty acids, proteins (from transmembrane to intermembrane or external)

5 0
3 years ago
Every helicopters can fly and if doesn't have wings. What is the counter example?
Monica [59]
You need to create as much possible lifting force to an airplane as you can. In order to do this, you need large gusts/ streams of air and room under the airplane for flight. ;)
5 0
4 years ago
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