Help, I'm not sure where and how many elections go on which side. I was given 2 options for both being (2,6) and (Product, Reactant)

List four observations that indicate that a chemical reaction may be taking place

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.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure