En un tratamiento a base de calor, una parte de obre caliente se enfria con agua, por lo cual pasa de 400 a 30°C. Cual era la masa de dicha parte si perdio 80Kcal de calor?

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.