How many atoms are in 1.4 mol of phosphorus trifluoride (pf3) ?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

How do you know when a chemical reaction has occurred