Please help ? What is NOT true of a reaction that is at equilibrium

CO(g)+2H2(g)<——->CH3 OH(g)

A. It is a symbolized by a double<—> arrow symbol

B. The rate of the forward and reverse reactions are equal

C. The concentrations of products and reactants are equal

D. There is no net change in the concentration of the reactants or products the concentration of reactants and products are constant

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

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.

In which phase(s) do the molecules take the shape of the container?