What does the theory of plate tectonics say about the earth's surface

How many atoms are there in 5.70 mol of mg

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!

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.