The balls in a modeling kit representing different elements are often distinguished by color. However, there are other ways to identify the elements. Beyond color, what differences do you expect between the atoms of distinct elements in a modeling kit? Select one or more:
a. The arrangement of holes in the atoms
b. The material that makes up the atoms
c. The comparative size of the atoms
d. The number of holes in the atoms

The equilibrium constant kc for the reaction 2 nocl(g) → 2 no(g) + cl2(g) is 0.453 at a certain temperature. a mixture of nocl, no, and cl2 with concentrations 1.30, 1.20, and 0.600 m, respectively, was introduced into a container at this temperature. which of the following is true? 1. no apparent reaction takes place. 2. [cl2] = 0.30 m at equilibrium. 3. nocl(g) is produced until equilibrium is reached. 4. [nocl] = [no] = [cl2] at equilibrium. 5. cl2(g) is produced until equilibrium is