A standard hydrogen half-cell is connected to a standard zinc half-cell. The zinc is oxidized and hydrogen ions are reduced. Which statement about the anode is true? A.) The zinc electrode is the anode, where reduction occurs.

B.) The hydrogen electrode is the anode, where oxidation occurs.

C.) The zinc electrode is the anode, where oxidation occurs.

D.) The hydrogen electrode is the anode, where reduction occurs.

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.

Which statement describes james chadwick’s discovery.

Light waves travel than sound waves.