Assuming ideal behavior, how much pressure will 2.75 mol hydrogen gas exert on the walls of a 4.00 l container at 35.0ºc?
a. 17.4 atm b. 19.8 atm c. 278 atm d. 296 atm

What is the mass of sodium in 3 moles of sodium chloride

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

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.