What is the density of krypton gas (MM = 83.8 g/mol) at 3.00
atm and 100. °C?
g/L

What does x represent in the formula for the compound xcl4?

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

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!