When making copper sulfate from copper oxide, the solid copper oxide must be added to the acid in excess i. e. there will be some unreacted
copper oxide left in solution). This is because this base is... whar?

insoluble
alkaline
acidic
neutral
soluble

Which fact represents evidence for the big bang theory?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

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.