If you allow dry ice to stand in a ball at room temperature for several hours, what would be left?

According to the tide table below what time of day will the highest tide occur?

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

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!