How many moles of oxygen gas are needed to completely react with 145 grams of aluminum? A.4.02 mol
B.128 mol
C.2.68 mol
D.145 mol
( not C because I got it wrong) help!!

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