5. What is the mass percent of each component in the mixture formed by adding 12 g of calcium
sullate, 18 , of sodium nitrate, and 25 g of
potassium chloride to 500 g of water?

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.