Consider the motion diagram. it illustrates a car's velocity (v) and acceleration (a). the best description of a car’s velocity in this diagram is:
a) a car’s velocity remained the same at 10 m/s.
b) a car’s velocity decreased from 10 m/s to 5 m/s.
c) a car increased its velocity from 5 m/s to 10 m/s.
d) a car increased its velocity from -5 m/s to -1 m/s.

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.