Your answer 4. Calculate the molar mass (MM) of a gas if 189.12 g of the gas is stored in a 7.50 L tank under a pressure of 235 psi. The temperature is held constant at 35.5 °C​

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.