An atom with a positive charge has
a. more protons than electrons
b) more neutrons than protons
c) more electrons than protons

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.

When a scientific theory has been tested and proved by the scientific community, it becomes a law

What best discribes the relationship between wavelength and frequency in a electromagnetic wave