For the acids, use the formula pH =-log[H*]. (Because HCI has 1 H* ion per formula unit, [H*] equals the molarity.) For water, use what you know about the pH of neutral solutions. For the bases, examine and
extend the pattern.

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.