A( n) can be a visual or mathematical representation of an object or a process

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.

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

What the blanks in these lines are ?