When describing a solution, which of the following statements are true: A) one substance is dissolved into another C) requires chemical separation
B) heterogeneous D) always involves the combination of a solid with a
liquid. E) All of these descriptions are true

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

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