4. Calculate the pOH and the pH of a solution in which 10.0 mL of 0.100 M HCI is added5.0 mL of 0.100 M NaOH. (15 points)

6. Concentrations of ozone were 60 ppb, in Taipei, Taoyuan and Taichung, respectively. Assuming temperature was 25℃ and pressure was 1 atm at all the three cities, which city had the highest ozone concentration? MW of ozone is 48 g/mole and the universal gas constant is 0.082 L atm. (20 points)