What is the pH of a solution of H2SO4 that has [H3O+] = 5.45 × 10–5 M? Round to the nearest hundredth. (I don't know why they put this in middle school)

Areaction in which products can react to re-form reactants is

What is the name of the enzyme that forms at the start of transcription?

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.