Which subatomic particle of an atom never changes?

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.

What is the volume of 3.2 moles of chlorine gas (cl2) at 295 k and 1.1 atm?

What factor besides temperature affects the boiling point of water? a. mass b. number of moles c. volume d. pressure