Consider the following reaction.
Cu(NO3)2 (s)→CuO (s)+NO2 (g)+O2 (g) Which of the following is/are correct?
Mass of reactants is not equal to mass of products
The reaction Cu(NO3)2 (s)→CuO (s)+NO2 (g)+O2 (g) , the atoms on reactant side (9) is not equal to the product side (7).
Therefore, mass of reactants ≠ mass of products.