A student adds a rectangular blocks of mass 26.10 g to graduated cylinder filled with 40.1 mL of water, the student read the new level of water to be 42.7 mL previously student measured the length, width and height of the block to be 3.0 cm by 1.0 cm by 1.0 cm

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.

What are the first three quantum numbers for the electrons located in subshell 2s?

Nonpoint source pollution is difficult to control because it