Water molecules can react with each other. When they do, a solution is formed that A. dissociates to hydrogen gas and oxygen gas.
B. contains H3O+ and OH-ions that will conduct electricity slightly.
C. contains H30* and OH- ions but will not conduct electricity.
D. ionises to form H3O+ ions only.

Who is better, messi or cristiano, i need this for a chemistry class. asap

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.

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form