What do the elements in Group 2 have in common? A. They tend to form ions with a -2 electric charge.

B. They tend to form ions with a +2 electric charge.

C. They are all highly reactive nonmetals.

D. They are all found in nature in their pure forms.

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

What conclusion can you draw from this experiment about the components of the black ink?

In an exothermic reaction at equilibrium, what is the effect of lowering the temperature? a. the reaction makes more products. b. the reaction makes more reactants. c. the reaction is unchanged.