A reaction vessel contains equal masses of iron and oxygen. How much FeO could theoretically be produced? a. An amount equal to the sum of the masses of iron and oxygen.
b. An amount greater than the sum of the masses of iron and oxygen.
c. An amount less than the sum of the masses of iron and oxygen.
d. There is no way to tell.

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.