In a lab, brett is mixing hydrochloric acid with water. this is an extremely explosive mixture that releases heat. what kind of reaction is this, endothermic or exothermic reaction

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

How have the greenhouse gasses increased from the year 2000 to 2018

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =