Question

? → BaO → ? → BaSO4 ///////////////

Answer 1

Ответ:

Ba→BaO→Ba(OH)2→BaSO4

1)2Ba+O2=2BaO

2)BaO+H2O=Ba(OH)2

3)Ba(OH)2+Na2SO4=BaSO4↓+2NaOH

Объяснение:

z

Answer 2

The missing component in the sequence is sulfuric acid (H2SO4).

The sequence can be understood as follows:

1. "?" represents an unknown reactant or a step that is not explicitly mentioned.
2. BaO (Barium oxide) reacts with the unknown reactant "?" to produce a compound.
3. The compound formed in step 2 reacts with sulfuric acid (H2SO4) to produce BaSO4 (Barium sulfate).

The balanced chemical equation for the overall reaction is:

BaO + H2SO4 → BaSO4 + H2O

In this reaction, barium oxide reacts with sulfuric acid to form barium sulfate and water.