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What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

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!