Which half reaction occurs at the cathode in this cell? o 2003-> O2 + 2002 +4e-
O O2 + 200, +4e-
> 2003
2H2 + 2003- -
2H2O + 200, +4e
2H20 + 200, +4e--> 2H2 + 2003-

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

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?