Under laboratory conditions, the basic salt of CuCO3*Cu(OH)2 is obtained by the interaction of cuprum (II) sulfate and soda: 2CuSO4 + 2Na2CO3 + H2O = CuCO3*Cu(OH)2 + 2Na2SO4 + CO2. Calculate the mass of soda that has reacted to form 10 g of basic salt