A chemist prepares 655.0 mL of a 6.0 M solution of phosphoric acid. He forgets to put the stopper in the flask, so two weeks later 48.0 mL have evaporated off. What is the new molarity of this solution?

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.