When radioactive uranium decays to produce thorium, it also emits a particle. as seen in the balanced nuclear equation, this particle can best be described as

a) a helium atom.
b) an alpha particle or a helium atom.
c) a beta particle or a hydrogen nucleus.
d) an alpha particle or a helium nucleus.

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