A20.0-l stainless steel container at 25°c was charged with
2.00 atm of hydrogen gas and 3.00 atm of oxygen gas. a spark
ignited the mixture, producing water. what is the pressure in
the tank at 25°c? if the exact same experiment were per-
formed, but the temperature was 125°c instead of 25°c, what
would be the pressure in the tank?

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18

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!

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".