How does having less carbon dioxide lead to fewer energy storage molecules? *

The fact that the total amount of energy in a system remains constant is a(n)

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.

How many moles are in 123.0 grams of kclo4?