A pharmacist prepares a solution by adding 2.00 mg of sodium ions to 112 g of water. How many ppm of Nat does the solution contain?

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 footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils

To calculate the molarity of a solution, you need to know the moles of solute and the