Which phrase best completes the following description of this molecule? The molecule contains
a. polar covalent bonds but is a polar molecule.
b. polar covalent bonds and is a polar molecule.
c. non polar bonds and is a nonpolar molecule.
d. polar covalent bonds and is a nonpolar molecule.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

the answer is c. nacl