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3 years ago

When the molecules in the air become less dense (as in the process of hearing), ______ has occurred.

Chemistry

1 answer:

Dahasolnce [82]3 years ago

4 0

Explanation:

Whenever there occurs a decrease in the density of a substance then this is known as rarefaction.

For example, when particles of a gas become more dispersed or spread out then it means they have gained more kinetic energy. As a result, there will occur a decrease in mass of the gas and increase in volume of the gas.

As density is mass divided by volume. Hence, decrease in mass will also lead to a decrease in density of the gas.

Therefore, we can conclude that when the molecules in the air become less dense (as in the process of hearing), rarefaction has occurred.

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Answer:

$CH_3CH_2OH$

Explanation:

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Hydrogen bonding is a special type of the dipole-dipole interaction and it occurs between hydrogen atom that is bonded to highly electronegative atom which is either fluorine, oxygen or nitrogen atom.

Partially positive end of the hydrogen atom is attracted to partially negative end of these atoms which is present in another molecule. It is strong force of attraction between the molecules.

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Answer:

Following are the solution to these question:

Explanation:

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Calculating the standardn:

$\sigma=\sqrt{\frac{\Sigma(x_i-\bar{x})^2}{n-1}}\\\\$

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$=3s+yblank \\\\=3 \times 28.195+50\\\\=84.585+50\\\\=134.585\\$

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For point c:

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