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tester [92]
2 years ago
8

Why is amber a great way to see fossils?

Chemistry
1 answer:
horrorfan [7]2 years ago
3 0

Answer:

because the fossils are beutifule

Explanation:

because the fossils are rare in the world

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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 <u>amide groups</u>. In this functional group, We have a nitrogen bond to hydrogen, so in this bond, we will have a <u>dipole</u>, due to the <u>electronegativity difference</u>. Nitrogen has more electronegativity than hydrogen, therefore a <u>positive dipole</u> would be generated in the hydrogen atom. Additionally, in the <u>carbonyl group</u> (C=O) due to the oxygen, we will have also a <u>dipole</u>, in this case, a <u>negative dipole</u> because the oxygen atom has <u>more electronegativity</u> (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 <u>"hydrogen bonds"</u>.

See figure 1

I hope it helps!

3 0
3 years ago
A girl throws a rock into a pond. A leaf floating on the pond bobs up and down but does not change location on the pond's surfac
sertanlavr [38]

This is due to the difference in density. The rock is denser than the leaf. And also, the rock is denser than the liquid in the pond. If the material is denser than the other material, it will sink. The same holds true for the rock, it sinks. But when the material is less dense than the other material, it floats. And it holds true for the leaf, it floats.

6 0
3 years ago
Please help me it's a emergency!!!!!​
PilotLPTM [1.2K]

Answer:

probably a space probe because the sun is too hot for anything else to go on  the sun

Explanation:

8 0
3 years ago
The reaction of Pb+4 and O-2 produces the compound of
vovikov84 [41]

Answer:

Pb₂O₄

                               

Explanation:

The given species are:

        Pb⁴⁺               O²⁻  

Now, to solve this problem, we use the combining powers which corresponds to the number of electrons usually lost or gained or shared by atoms during the course of a chemical combination.

                                          Pb⁴⁺               O²⁻  

Combining power               4                    2

Exchange of valencies        2                    4

Now the molecular formula is  Pb₂O₄

                               

4 0
3 years ago
Photosynthesis is very important to us. Name 3 different types of ways you benefit from photosynthesis each day
Novay_Z [31]
Breathing as photosynthesis releases oxygen
food as photosynthesis helps the plant to grow
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