73 g of conc. hcl was diluted by adding 144g of water . how many gram atom of hydrogen are present in the dilute acid?

What's a recharge area? a. the part of an aquifer where groundwater meets a lake or stream b. the part of an aquifer where surface water reaches the water table c. the part of an aquifer that's located between two aquicludes d. the part of an aquifer that's located at a lower elevation