Determine the pH of an HNO2 solution of each of the following concentrations:

a) 0.110 M

b.)1.50 *10-2 M

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

Why do electrons further from the nucleus have more energy

At which temperature would a reaction with ah= -220 kj/mol and as=-0.05 kj/(mol-k) be spontaneous?