PLEASE HELP M PLEAS Given the following reaction: CuO (s) + H2 (g) ® Cu (s) + H2O (g) If 357. L of hydrogen gas are used to reduce copper (II) oxide at STP, what mass of copper is to be expected?

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

Identify a specific example for each type of technology