Which term best completes the diagram
a
legs
b
cells
C hairs
d teeth

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!