1) which is not a way to know if a chemical change has occurred? a. heat is absorbed or released b. phase change occurs c. new color d. new substance is made 2) is co2 a reactant or product? 3) is o2 a reactant or product? (2 and 3 are combined i just made them two separate questions)

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?