Calculate the pH of each of the following strong acid solutions. ( go out to three decimal places) Part A
7.5×10−3 M HBr,
Part B
1.29 g of HNO3 in 400 mL of solution,
Part C
5.00 mL of 0.240 M HClO4 diluted to 57.0 mL ,
Part D
A solution formed by mixing 13.0 mL of 0.120 M HBr with 19.0 mL of 0.210 M HCl.

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