What is the difference between closed, open and isolated systems?

In which phase(s) do the molecules take the shape of the container?

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

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .