Which of the following is not a characteristic of ideal fluids?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

How many moles of al3+ ions are in 1.25 moles of al2o3

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!