im staying at brainlly guys false alrm im back lol the weirdo got deleted =D also can u simplify this math term for me?4.1\times 10^{-2}-7.9\times 10^{-3}

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not