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Galina-37 [17]
3 years ago
14

In a survey that asked about alcohol use in high school students, which of

Chemistry
2 answers:
Nookie1986 [14]3 years ago
7 0

Answer: B

Explanation: to have a control, and many samples to investigate and cover the differences and anseretics.

tankabanditka [31]3 years ago
3 0
A developing a program to combat alcohol use
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In the science fiction movie, The Abyss, a diver is able to breathe while his head is immersed in a specially prepared liquid pu
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Explanation:

This type of experiment was carried out in 1960s on rodents, it was partially successful but was perceived impractical and dangerous for humans,it is possible theoretically.

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g All of the molecules below have polar bonds but only one of the molecules is a polar molecule. Which one is a polar molecule?
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Answer: NF_3

Explanation:

Geometrical symmetry of the molecule and the polarity of the bonds determine the polarity of the molecule.

The molecule that has zero dipole moment that means it is a geometrically symmetric molecule and the molecule which has some net dipole moment means it is a geometrically asymmetric molecule.

As the molecule is symmetric, the dipole moment will be zero as dipole moments cancel each other and the molecule will be non-polar.

As the molecule is asymmetric, the dipole moment will not be zero and the molecule will be polar.

Example: NF_3

Thus, we can say that NF_3 is a polar molecule.

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