1. Which type of base is the chlorine molecule?

chlorine-35 (75.53 percent) and chlorine-37 (24.47 percent)

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.