2. Water Molecule A water molecule consists of two hydrogen atoms (each of mass 1.008 u) bonded to an oxygen atom (of mass 16.00 u). The two polar bonds are separated by an angle of 105.5, and the oxygen-hydrogen internuclear spacing is 0.991 . The origin of a Cartesian coordinate frame is located at the nucleus of the oxygen atom, as shown. The z-axis passes through the molecule's center of mass, and the two hydrogen nuclei lie in the yz plane. H 105's H y Determine the coordinates (xcm. Yem, Zem) of the molecule's center of mass, in ngstroms. Assume that the entire atom mass is contained within the nucleus. [1 = 10-10 m; 1 u = 1.661 x 10-27 kg]