Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes?
a. identify the longest chain of carbon atoms.
b. examine the multiple bond for cis- and trans- isomers.
c. number the chain of carbons, starting with the end nearest the multiple bond.
d. add a number prefix indicating the first carbon atom in the multiple bond.

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.