[fa®m]

what are the results of these reactions:
AgNO3 + Cu --------> ?
HCl + 2CaCO3 -------> ?
CaO + H2O --------> ?
HCl + Zn --------> ?

and what kind of reaction is NHCO3. I though decomposition, but I don't understand how i'd solve that if decomposition were correct...(or in general...)

thanks!