When a compound such as X2Z4 is created, what would be the
correct simplified chemical formula?

Can someone me with questions 15 to 17 plz.

How many moles of al3+ ions are in 1.25 moles of al2o3

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.