For the combustion of methane, CH4 + 2 O2 --> CO2 + 2 H2O, if the reaction starts with 4 moles oxygen (O2), how many moles of water (H2O) will be produced?

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