An irregular chunk of iron has a density of 7.87 g/cm^3. A 14.5 gram chunk is added to a graduated cylinder. If the final. volume in the cylinder is 39.9mL, what was the starting volume?

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

What information does a complete ionic equation give that the balanced equation doesn’t show?

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.