Point out which contributions are present in the modern atomic model and which were eventually disproven and thus are not part of the modern model.
(john dalton):
1.all matter is made of atoms.
2.atoms cannot be made or destroyed.
3.all atoms of a given element are identical in mass and properties.
4.compounds are formed by a combination of two or more different kinds of atoms.
5.a chemical reaction occurs when atoms are rearranged.

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?