The equation for the complete combustion of methane is ch4(g) + 2o2(g) → co2(g) + 2h2o(l) to calculate the number of grams of co2 produced by the reaction of 29.5 g of ch4 with o2, the first conversion factor to use is

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.