Amedical lab is testing a new anticancer drug on cancer cells. the drug stock solution concentration is 1.5×10−9m, and 5.00 ml of this solution will be delivered to a dish containing 2.0×105 cancer cells in 5.00 ml of aqueous fluid

what is the ratio of drug molecules to the number of cancer cells in the dish?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

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!