A solution is made up by dissolving 47.5 g of potassium iodide (KI) in 300cm³ of water. Calculate the concentration of Kl in mole/litre.

please I need the calculations​

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