How is density related to molecules in your body/cells? Please don't look up an answer because I can get in trouble. Explain what ur saying as if you was explaining to ur little sister.

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.