If you were to describe the shape of the milky way, what term would you use? a. irregular galaxy b. elliptical galaxy c. barred-spiral galaxy d. large clustered galaxy

What are transitions between a liquid and gas called? identify which way they are transitioning

An experimental procedure requires a 10 ml of acid to be dissolved

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!