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Alla [95]
1 year ago
5

a net magnetic moment is associated with each atom in paramagnetic and ferromagnetic materials. explain why ferromagnetic materi

als can be permanently magnetized whereas paramagnetic ones cannot
Chemistry
1 answer:
nexus9112 [7]1 year ago
4 0

Ferromagnetic materials can be permanently magnetized whereas paramagnetic ones cannot because in ferromagnetic material the electron spin is in the same direction whereas in the paramagnetic material the electrons spin is in all direction.

A net magnetic moment is associated with each of the atom in the paramagnetic and the ferromagnetic materials. the ferromagnetic is permanently magnetized as the in case of ferromagnetic material the electron spin is in same direction. and ferromagnetic material shows strong attractive or repulsive force when ferromagnetic material introduced to the permanent magnet.

In the case of paramagnetic material the electrons spin is in all the direction thats why paramagnetic material cannot be permanently magnetized.

To learn more about ferromagnetic material here

brainly.com/question/29411314

#SPJ4

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Calculate the values of ΔU, ΔH, and ΔS for the following process:
kykrilka [37]

The values of the changes are

ΔH = 46.44kJ

Δu =  43.34Kj

ΔS = 126.6 J/K

<h3>How to find change in H</h3>

= 1 mol + 75.3 (100 + 273) - 25 + 273 + 1 * 40.79

= 5.6475 + 40.79

= 46.44kJ

<h3>How to find change in S</h3>

1 mol + 75.3 x ln 373/298 + 1 mol x 40.79

= 0.1263

ΔS = 126.6 J/K

<h3>How to find the change in U</h3>

46.44 - 0.00831 * 373

= 43.34Kj

Read more on molar heat here:

brainly.com/question/13439286

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5 0
2 years ago
How many asymmetric centers are present in the open chain form of the aldohexose D-(-)-gulose?
bulgar [2K]

Answer:

D) 4

Explanation:

If we want to find the asymmetric centers, we must first remember that in an asymmetric center, in the carbon, we will have 4 different types of groups bonded to it.

Therefore we must look for carbons that have 4 different groups. With this in mind, we can look at each carbon.

<u>Carbon 1</u>

In this carbon, we have two bonds with the oxygen, therefore, we dont have 4 different groups. So, this is not an asymmetric center.

<u>Carbon 2</u>

In this carbon, we have an "OH" in the top, an hydrogen in the bottom a carbonyl group in the right, and a CHOH in the left. We have 4 different groups. So, this is an asymmetric center.

<u>Carbon 3</u>

In this carbon, we have an "OH" at the bottom, an hydrogen in the top, a CHOH group in the right (that is bonded to a carbonyl group), and a CHOH in the left. We have 4 different groups. So, this is an asymmetric center.

<u>Carbon 4</u>

In this carbon, we have an "OH" at the top, an hydrogen in the bottom a CHOH group in the right (that is bonded to a CHOH group), and a CHOH in the left. We have 4 different groups. So, this is an asymmetric center.

<u>Carbon 5</u>

In this carbon, we have an "OH" at the bottom, an hydrogen in the top, a CHOH group in the right (that is bonded to a CHOH), and a CH2OH in the left. We have 4 different groups. So, this is an asymmetric center.

<u>Carbon 6</u>

In this carbon, we have two bonds with hydrogens, therefore, we dont have 4 different groups. So, this is not an asymmetric center.

See figure 1

I hope it helps!

4 0
3 years ago
What is electrolysis <br><br><br> What is alternating current
trapecia [35]
It is when you separate two substances using electricity of its molten state like aluminium oxide separates to aluminium and oxygen
4 0
3 years ago
The molecule shown belongs to which class of compounds
Kaylis [27]
The answer is (4) amino acid. This molecule has one carboxyl and one amidogen linked at the same carbon atom. This is the property of amino acid. So this is an amino acid.
7 0
3 years ago
and compound is a substance made of two or more chemicals that are chemically joined in a specific combination most matter is fo
Crazy boy [7]

Answer:

elements

Explanation:

possibly elements

4 0
3 years ago
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