"Cuando se quema un papel sucede que las cenizas obtenidas tienen menor masa que este¿Cómo representarias esta reacción y el cumplimiento de la ley de conservación de
la masa con ecuaciones químicas?".

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

What statement goes against the kinetic theory of gases

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.