A 2-column table with 3 rows titled Sale Price Calculation. Column 1 has entries Original price, markdown, sale price. Column 2 has entries 12 dollars, 2 dollars and 40 cents, 9 dollars and 60 cents. (Name the singers)

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

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!

What four properties do all waves have in common