What physical property of hydrocarbons is used in fractional distillation

The ph of carrots are 5.0 how it is classified a.acidic b.basic c.indicator d.neutral

The ammonia molecule in the diagram has the observed bond orientation because

How does water evaporating from a glass show that matter is made up of particles? a. the heat energy from the air causes the glass to fill up with water particles. b. the liquid water particles turn into water vapor that spreads in the air. c. the particles of the glass dissolve in water and cause it to evaporate. d. the tiny particles of the glass evaporate and seem to disappear.