What mass in grams of sucrose must be dissolved in 2000 grams of water to make a 0.1m solution?

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

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

Why do electrons further from the nucleus have more energy