If Iron has a density of 7.87 g/ml (cm) and Lead is 11.3 g/ml (cm). Using this information, please identify an unknown substance that has a volume of 6.7 cm'and a mass of 75.7 8. What is this
unknown?

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