How many moles of o2 are in 53 l of o2 at stp? a) 2.4 b) 0.45 c) 1.65 d) 1187

What are the 4 phases of matter in order of increasing engery content?

What’s the theoretical yield of solid lead

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!