Consider the following data on some weak acids and weak bases: Acid Ka
name formula
nitrous acidHNO2×4.510−4
acetic acidHCH3CO2×1.810−5
Base Kb
name formula
ammonia NH3 ×1.810−5
ethylamineC2H5NH2×6.410−4
Use this data to rank the following solutions in order of increasing pH
solution pH
0.1 M NaNO2
0.1 M NH4Cl
0.1 M NaI
0.1 M C2H5NH3Br

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.