How many moles are equal to 2.41 x 10^24 formula units of NaCl?

Which sample at stp has the same number of atoms as 18 liters of ne at stp

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20