Nêu phương pháp hóa học nhận biết các chất khhoong màu gòm benzen, phenol, etanol viết phương trình hóa học của các phản ứng xảy ra

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

Can someone me with 3 and 4 plz. this is for masteries test.

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