Why is water considered an unusual molecule? Question 1 options: No molecule of

Question

Why is water considered an unusual molecule?

Question 1 options:

No molecule of similar molecular weight is a liquid at room temperature.

No molecule of similar molecular weight has as high a boiling point.

All of the choices listed are correct.

Water expands upon freezing.

Water can dissolve many polar and ionic compounds.

Which of the following substances should have the highest Hvap? Note that all of these molecules have approximately the same molar mass. Question 9 options:

a) CH3CH2CH3 b) CH3Cl c) CH3CH2F d) CH3CH2NH2 e) Not enough information has been provided.

Rank the compounds NH3, CH4 and PH3 in order of increasing boiling point.

Question 3 options:

NH3 < PH3 < CH4

CH4 < NH3 < PH3

NH3 < CH4 < PH3

CH4 < PH3 < NH3

PH3 < NH3 < CH4

Which of the following substances should have the highest Hvap? Note that all of these molecules have approximately the same molar mass.

Question 9 options:

CH3CH2CH3

CH3Cl

CH3CH2F

CH3CH2NH2

Not enough information has been provided.

a)

No molecule of similar molecular weight is a liquid at room temperature.

b)

No molecule of similar molecular weight has as high a boiling point.

c)

All of the choices listed are correct.

d)

Water expands upon freezing.

e)

Water can dissolve many polar and ionic compounds.

Explanation / Answer

1) Since water can dissolve many polar and ionic compounds, water is considered as an unusual molecule

Thus, the correct option is 'e'

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