The answer is 975S because u add all ofthem
I would honestly say C. All others have ingredients in them that makes them work, the combination of stuff to put out the fire, film is made from a certain material and drugs are an ovbious mixture. Looking at the stars is the only thing you don't need chemistry for.
Tough question, I would suggest using Google maybe, or just plain out asking your science teacher.
The number of lone pairs that are most likely found on the central atom is zero. There are no lone pairs found on the central atom.
