Which statement supports one of Dalton's contributions to the atomic theory? A. The element carbon is made up only of nitrogen atoms. B. The element nitrogen is made up only of nitrogen atoms. C. The element nitrogen is made up of carbon and nitrogen atoms. D. The element carbon is made up of carbon and nitrogen atoms.

Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph

How will the emission of an alpha particle affect the atomic number of an atom

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.