Question

помогите с химией пж, 9 класс

Answer 1

А)

2Ba + O2 = 2BaO

BaO + H2O = Ba(OH)2

Ba(OH)2 + 2HNO3 = Ba(NO3)2 + 2H2O

Б)

2Cu + O2 = 2CuO

CuO + 2HCl = CuCl2 + H2O

CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl

Cu(OH)2 = CuO + H2O

В)

2Na + 2H2O = 2NaOH + H2

2NaOH + CO2 = Na2CO3 + H2O

Na : S : O = 36.51/23 : 25.39/32 : 38.1/16 = 1.59/0.8 : 0.8/0.8 : 2.38/0.8 = 2 : 1 : 3

Na2SO3