The reaction between calcium nitrate and ammonium sulfate is a double displacement reaction, which can be represented as follows:Ca NO3 2 + NH4 2SO4 CaSO4 + 2 NH4NO3In this reaction, calcium nitrate Ca NO3 2 reacts with ammonium sulfate NH4 2SO4 to form calcium sulfate CaSO4 and ammonium nitrate NH4NO3 . The balanced chemical equation is already provided.