What is the reason for if A=B then 8A=8B A)Multiplication Property of Equality
B)Reflexive Property of Equality
C)Given

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!

Is the flow of energy during vaporizing more like the flow during melting or during freezing

What volume of 0.500 mol/l hydrochloric acid, hci (aq) is required to react completely with 1.00 g of aluminum hydroxide, ai(oh)3 (s)?