According to the vapor pressure graph above, at 20°C, which substances would have weaker intermolecular forces than diethyl ether?
A)
butane and propane
B)
butane and 2-heptene
a)
methyl acetate and fluorobenzene
D)
neo pentane and 2-heptene

Sorry i dont understand the question can you rephase it?

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.