Complete the following calculations. Find the uncertainty in each calculated value by the propagation of errors method. 1. It takes 10.5(1) s for a sprinter to run 100.00(5) m. Calculate the average speed of the sprinter in meters per second and mi/hr. 2. The mass of an empty 10-mL graduated cylinder is 25.442(2) g. After adding 8.5(1) mL of liquid the mass increases to 32.402(2) g. Calculate the density of the liquid in g/mL and kg/L. 3. The radius of an iodine atom is 140(5) pm. Find the volume of one iodine atom in pm' and cm'. 4. pH is defined as -log[H"] where [H'] is the molarity (M) of hydrogen ions in an aqueous solution. If the molarity of hydrogen ions is 1.32(2)x10 M, find the pH. 5. A solution has a pH of 10.72(2). Find the concentration of hydrogen ions in solution. 6. A Cu/Al alloy contains 95.6(2)% copper by mass. How many milligrams of aluminum are in a 2.7332(2) g sample of this alloy?