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Dima020 [189]
3 years ago
12

Which kind of boundary is seen in earthquakes that are caused by normal faults?

Chemistry
1 answer:
bearhunter [10]3 years ago
5 0
Transform boundary is correct answer
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Given the formula representing a molecule:
Aleksandr [31]

Answer:

B) Symmetrical and nonpolar  

Step-by-step explanation:

The formula is H-C≡C-H.

Each C atom has <em>two</em> electron regions, so VSEPR theory predicts a <em>linear molecular geometry</em> (see image below).

The molecule is symmetrical, because the green line divides the molecule into two halves that are mirror images of each other.

The C-H bonds are slightly polar, because C is more electronegative than H (µ ≈ 0.4 D).

The C atoms are partially negative (red), while the H atoms are partially positive (blue).

However, the two C-H bond dipoles point in <em>opposite directions</em>, so they cancel each other. The molecule has <em>no net dipole moment.</em>

Acetylene is nonpolar.

3 0
3 years ago
Read 2 more answers
Which which atom is held together by covalent bonds?​
Sedaia [141]
Covalent bonds are strong bonds. Atoms that share pairs of electrons form molecules. A molecule is a group of atoms held together by covalent bonds. A diatomic molecule is a molecule containing only two atoms.
4 0
3 years ago
TILEF
torisob [31]

Answer:

Na

Explanation:

sodium has mass number 23 and atomic number 11 so number of protons =number of electrons =atomic number which is 11 and number of neutrons=mass number-number of protons =23-11=12

7 0
2 years ago
Explain why mixing two, or more, substances is a physical change.
Strike441 [17]
<span>When two or more substances are mixed together but not chemically joined they are called as mixtures. Therefore, it is only a physical change taking place.
</span>
I hope this helps you! Good luck :)
4 0
3 years ago
A student gains 1.0 lb in two weeks. How many grams did he gain?
OlgaM077 [116]
1 lb=453.592 grams
So he gained 453.592 pounds
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3 years ago
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