The magnitude of the force between two point charges 1.0 m apart is 9 x 10^9N . If the distance between them is doubled, what does the force become? a. 0.65 x 10-4N
b. 2.25 x 10°N
c. 3.75 x 10-6N
d. 1.76 x 10°N

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