What is the formula for phosphorus pentafluoride?

How are elements arranged in a periodic table

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage