Please answer 11 to 13 to receive 10 points. Please read the bullet points to under the questions. And check the molecular formula image.

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Drug abuse will not lead to physical and psychological dependence. true or false ?