For a galvanic cell to generate an electric current flowing from anode to cathode, what must be true? Select the correct answer below: Eanode and Ecathode must both be positive.

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

Plz mark brainliest 30 points1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s.2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

How are isotopes of the same chemical element alike? how are they different?