How are the vapor pressure and boiling point of alkynes affected as the chain length increases?
both vapor pressure and boiling point decrease.
both vapor pressure and boiling point increase.
vapor pressure increases, and boiling point decreases.
vapor pressure decreases, and boiling point increases.

Vapor pressure decreases, and boiling point increases.

Explanation:

The increased chain length increases boiling point and vapor pressure and boiling point are inversely related.

Therefore:   Vapor pressure decreases, and boiling point increases.

Distance = 360 mi= 579.36 Km

Explanation:

Time taken: 3.5 hrs

Speed: 120mi/HR

Now we know that

distance = speed x time

Substituting the given values in the above formula we get

Distance= 120mi/hr x 3 hrs