Question

генетическая цепочка Ca-> CaO->(OH)2-> Ca (NO3)2-> CaSO4

Answer 1

2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O
Ca(NO3)2 + Na2SO4 = 2NaNO3 + CaSO4