A58.7-g sample of nickel (s = 0.443 j/(g ∙ ° initially at 147.4°c, is placed in an insulated vessel containing 184.0 g of water (s = 4.18 j/(g ∙ ° initially at 29.9°c. once equilibrium is reached, what is the final temperature of the metal–water mixture?

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?