PLEASE HELP ME WITH THIS ONE QUESTION

“ which structure below represents an atom of the same element?”

THERE IS A PHOTO ATTACHED

An occluded front moves over the farmland that has been experiencing drought conditions. what change in weather will this front likely bring? a. gray skies, but no rain b. an extended period of rain c. more dry air and sunny skies d. violent, short-lived thunderstorms

What is the theoretical yield of carbon dioxide? a)0.993 gb)2.98 gc)3.65 gd)8.93 g

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !