How many lone pairs of electrons are present in the lewis structure of calcium sulfide

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Identify a strong intermolecular force of attraction between an alcohol