If a bullet train in China can travel 100 miles and 0.75 hours 45 minutes what is its speed

Compare and contrast solutions and suspensions

Is powdered sports drink ionic or covalent ? 10pts !

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!