How many moles of mercury, hg, are there in 1.30 x 10^7 atoms of murcury? , it's urgent! you! (:

Avariable that is not being directly tested during an experiment should be

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

Air can be considered a mixture. which statement does not explain why?