40POINTS AND BRAINLIEST

Chemistry

1 answer:

mina [271]3 years ago

7 0

Answer:

Explanation:

hope this helps :)

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What happens to the total mass of a substance undergoing a physical change

yKpoI14uk [10]

That depends. What kind of change are you talking about? But

Mass through chemical change stays the same as well. Example: burning paper, the ash left behind is not all of the mass of the reactants, Carbon dioxide, and other substances also makeupmass but just is not seen

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3 years ago

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Hydrogen bonding between polyamide chains plays an important role in determining the properties of a nylon such as nylon 6,6. Dr

Eduardwww [97]

Answer:

See figure 1

Explanation:

In the structure of nylon 6,6 we have amide groups. In this functional group, We have a nitrogen bond to hydrogen, so in this bond, we will have a dipole, due to the electronegativity difference. Nitrogen has more electronegativity than hydrogen, therefore a positive dipole would be generated in the hydrogen atom. Additionally, in the carbonyl group (C=O) due to the oxygen, we will have also a dipole, in this case, a negative dipole because the oxygen atom has more electronegativity (compare with carbon).

When we put two strings of nylon 6,6 the positive dipole will interact with the negative dipole and vice-versa and we will obtain the "hydrogen bonds".

See figure 1

I hope it helps!

3 0

3 years ago

Mg4O2 is an example of what type of bond?

Softa [21]

Yes the answer is iconic

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3 years ago

List science of kinesiology that interest you? Why there science interest you

Mkey [24]

Answer:

The study of the human body as a machine for the performance of work has its foundations in three major areas of study—namely, mechanics, anatomy, and physiology; more specifically, biomechanics, musculoskeletal anatomy, and neuromuscular physiology. Explanation:

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3 years ago

A bond in which one atom contributes both bonding electrons to a covalentbond

yKpoI14uk [10]

<h3>Answer:</h3>

A coordinate bond

<h3>Explanation:</h3>

A chemical bond is a force of attraction between two or more atoms of elements.
Covalent bond is a type of chemical bond that occurs between non-metal atoms.
It occurs as a result of sharing of electrons between the non-metal atoms.
Atoms involved in covalent bond formation may contribute equally to the bond formation or the electrons shared may come form one of the atoms.
When the electrons shared in a covalent bond are derived from one atom, then the covalent bond is known as a coordinate bond.

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3 years ago