A gaseous mixture at a constant temperature contains 02, CO2, and helium. Which of the following list the three gases in order of increasing rates of effusion

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

Table sugar completely dissolved in water is an example of a?

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!