A 10.5 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If 18.3 mL of 0.582 M barium hydroxide are required to neutralize the hydroiodic acid, what is the percent by mass of hydroiodic acid in the mixture? % by mass

C. 92.3 m d. 226 mL 4. Solution B was prepared from solution A as shown below. The concentration of solution B is: 2. 2.00 M b. 2.00 x 10-3 C. 8.00 M d. 8.00 x 10-3 هایی ناخذ الكيو ستة آلية deez 2.00 ml A 500.00 ml M = 2.00 M X 500.00 ml M = ??

Table 1. Standardization of HCI Solutions (40 pts) Trial Volume of HCI (To the nearest 0.01 mL) Molarity of NaOH (mol/L) Volume of NaOH (To the nearest 0.05 mL) Molarity of HCI* (mol/L) 1 20.00 mL 0.01011 10.40 0.0525 2 20.00 L 0.01011 10.50 0.0530 3 20.00 ml 0.01011 10.50 0.0535 4 20.00 mL 0.01011 10.60 0.0535 5 (If necessary) 20.00 mL 0.01011 10.50 0.0530 *Show calculations. Attach additional sheets of papers. According to experiment, the average molarity of our HCI solution is 0.0531 ± The uncertainty should cover the range of the experimental values. mol/L.

1. 0.5 liters of saltwater having a chloride concentration of 27,500 mg/L is added to 10 liters of NYC tap water having a chloride concentration of 10.0 mg/L. a. Draw a diagram and write the appropriate mass balance equation. b. Calculate the concentration of chloride in the mixture. c. Would the chloride concentration in the mixture meet the NYS Department of Health Maximum Contaminant Level (MCL) of 250 mg/L?