Many ions are said to have a "noble gas configuration" because?

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added