1. chemist needs to create a 45% HCl solution. (HCl is hydrochloric acid. A "45% HCl solution" contains 45% HCl and the other 55% is water.) How much of a 70% HCl solution must be mixed with 75 ml of a 20% HCl solution in order to result in a 45% HCl solution? Round your answer to 2 places after the decimal point (if necessary) and do NOT type any units (such as "ml") in the answer box. Amount of 70% HCl solution:

2. bank loaned out $6100, part of it at a rate of 6.9% per year and the rest of it at a rate of 5.8% per year. The total amount of interest owed to the bank at the end of one year was $405.53. Find the amount of money that the bank loaned out at 6.9%. Round your answer to the nearest cent (2 places after the decimal point), and do NOT type a dollar sign in the answer box. Amount of money loaned at 6.9%: $