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elena55 [62]
3 years ago
13

I need help, I don't understand the question

Chemistry
1 answer:
Oduvanchick [21]3 years ago
3 0
Remember this. 

Ionic molecules has ionic bonds
Nonpolar molecules has dispersion (Van del Waals)
Polar molecules could either have hydrogen bonding or Dipole-Dipole. Hydrogen bonding is when you have F, O or N with H, every other polar molecule is dipole-dipole.

a. polar- dipole-dipole
b. polar- hydrogen bonding
c. nonpolar- dispersion
d. nonpolar- dispersion
e. polar- dipole-dipole
f. polar-dipole-dipole
g. nonpolar- dispersion
h. polar- hydrogen bonding.
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Which of the following item(s) explain the differences between the Ka values. Choose one or more: A. The oxidation state for oxy
Allisa [31]

Answer:

<em>C. The electron-withdrawing fluorine atoms pull electron density from the oxygen in trifluoroacetate. The negative charge is more stabilized in trifluoroacetate by this effect.</em>

<em></em>

Explanation:

<em>The structures of trifluoroacetate and acetic acid are both shown in the image attached.</em>

<em>The trifluoroacetate anion (CF3CO2-), just like the acetate anion has in the middle, two oxygen atoms.</em>

<em>However, in the trifluoroacetate anion, there are also three electronegative fluorine atoms attached to the nearby carbon atom attached to the carbonyl, and these pull some electron density through the sigma bonding network away from the oxygen atoms, thereby spreading out the negative charge further. This effect, called the "inductive effect" stabilizes the anion formed,the trifouoroacetate anion is thus more stabilized than the acetate anion.</em>

<em>Hence, trifluoroacetic acid is a stronger acid than acetic acid, having a pKa of -0.18.</em>

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<u><em>Hope this helps!</em></u>

<u><em>Please mark brainliest!</em></u>

3 0
3 years ago
Dark silicates have a specific gravity of 3.2 to 3.6 and are composed primarily of silica tetrahedral and ________. Select one:
ch4aika [34]

The answer is option e that is e. Iron and magnesium.

Dark silicates have a specific gravity of 3.2 to 3.6 and are composed primarily of silica tetrahedral and iron and magnesium.

Iron and magnesium is a component of dark silicates that have a specific gravity of 3.2 to 3.6.

So the answer is iron and magnesium.


8 0
3 years ago
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Answer:

ttfyggayxdy used to usual faith using

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Why is the C-14/C-12 ratio used to date once-living organisms?
ki77a [65]
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8 0
4 years ago
I would like some assistance
charle [14.2K]

Answer:

#2.

Explanation:

Look at the charges. Both are positive, therefore both are cations.

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