Refer to the diagram showing how to electroplate an iron object identify the type of cell depicted in the diagram why is an external power source needed for the chemical change to occur in the cell write the half reaction that occurs at the cathode of the cell explain your answer

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

Aman applies a force of 500n to push a truck 100m down the street how much does he do?

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?