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Triss [41]
3 years ago
7

What is the predominant intermolecular force in the liquid state of each of these compounds: hydrogen fluoride (HF), carbon tetr

abromide (CBr4), and hydrogen chloride (HCl)?
a) dipole-dipole forces
b) hydrogen bonding
c) dispersion forces
Chemistry
1 answer:
Agata [3.3K]3 years ago
5 0

Answer:

Dipole dipole forces - HCL.

Hydrogen bonding - HF.

Dispersion forces - CBr4.

Explanation:

Dispersion forces work between all the molecules, but this is not the primary intramolecular force in hydrogen fluoride. The best to get intramolecular forces in the liquid state of the compounds are the normal boiling points:

HF boiling point is - 19.5 degree celsius.

HCl boiling point is - 39.6 degree celsius.

HCBr4 boiling point is - 76.2 degree celsius.

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(a) what is the approximate ductility (%el) of a brass that has a yield strength of 230 mpa (33360 psi)?
ss7ja [257]

Based on the calculations, the approximate ductility (%el) of this brass is equal to 2.3%.

<u>Given the following data:</u>

  • Yield strength = 230 mpa (33360 psi).

<h3>What is ductility?</h3>

Ductility can be defined as an important property of a material which determines its ability to become elongated due to the application of stress.

Mathematically, the ductility of a material can be expressed as percentage elongation in length:

\% el = \frac{\Delta L}{L_i} =\frac{L_f - L_i}{L_i}

<u>Where:</u>

  • L_i is the original length.
  • L_f is the final length.
  • \Delta L is the yield strength.

For this exercise, let us assume the original length of this brass is equal to 100 meters.

Substituting the parameters into the formula, we have;

\% el = \frac{230}{100}

Ductility = 2.3%.

Read more on ductility here: brainly.com/question/828860

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