Could someone please help me out here. I just need it asap please

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

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

What is the mass of 0.46 mil of mgcl2