Question

Ba-> BaO->Ba(OH)2->BaCO3->Ba(NO3)2

Answer 1

2Ba + O2 = 2BaO

BaO + H2O = Ba(OH)2

Ba(OH)2 + CO2 = BaCO3 + H2O

BaCO3 + 2HNO3 = Ba(NO3)2 + CO2 + H2O

Answer 2

It appears that you have listed a series of chemical reactions involving the element barium (Ba). Let's go through each of these reactions:

1. Ba -> BaO: This represents the reaction where barium (Ba) reacts with oxygen (O) to form barium oxide (BaO). Equation: Ba + O2 -> BaO

2. BaO -> Ba(OH)2: This shows the reaction where barium oxide (BaO) reacts with water (H2O) to form barium hydroxide (Ba(OH)2). Equation: BaO + H2O -> Ba(OH)2

3. Ba(OH)2 -> BaCO3: This represents the reaction where barium hydroxide (Ba(OH)2) reacts with carbon dioxide (CO2) to form barium carbonate (BaCO3). Equation: Ba(OH)2 + CO2 -> BaCO3 + H2O

4. BaCO3 -> Ba(NO3)2: This shows the reaction where barium carbonate (BaCO3) reacts with nitric acid (HNO3) to form barium nitrate (Ba(NO3)2). Equation: BaCO3 + 2HNO3 -> Ba(NO3)2 + CO2 + H2O

It's important to note that chemical reactions should always be balanced, meaning the same number of atoms of each element should appear on both sides of the reaction arrow. I've provided the balanced chemical equations above for reference.