Which of the following is the correct expression for the rate of the following reaction? note: not all species are gaseous. cuo(s) + h2s (g) < --> cu(s) + h2o (g) a. [cu] x [h2o] / ([cuo] x [h2s]) b. [h2o] / [h2s] c. [cuo] x [h2s] / ([cu] x [h2o]) d. none of these are correct

The following is the correct expression for the rate of the following reaction; CuO(s) + H2S (g) <--> Cu(s) + H2O (g): Products over reactants

The correct Answer, Letter Choice, (B), Keq > [H2O] / [H2S]

Hope that helps : )

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

a) the particles of the chair are strongly held together.