A hypothetical element has two main isotopes with mass numbers of 51 and 54. If 64.00% of the isotopes have a mass number of 51 amu, what atomie weight should be listed on the periodic table for this element? Answer in units of amu.

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.