Question

Ва + О2 → N2 + O2 → Cr + O2 → Li + O2 →

Answer 1

Відповідь:

Ba + O2 = BaO2

N2 + 2O2 = 2NO2

Cr + O2 = CrO2

Li + O2 = Li2O

Пояснення:

Answer 2

The given sequence of chemical reactions seems incomplete or incorrect. The chemical equations you provided do not show complete reactions and some of them are not balanced. Here's a breakdown of each reaction and their balanced forms:

1. Va + O2: "Va" is not a recognized chemical symbol or element. Therefore, we cannot determine the reaction or its balanced form without proper information.

2. N2 + O2: This reaction represents the combination of nitrogen gas (N2) and oxygen gas (O2). However, it is an incorrect representation since both N2 and O2 are stable molecules and do not readily react with each other.

3. Cr + O2: This reaction represents the combination of chromium (Cr) and oxygen gas (O2). However, it is also an incomplete reaction. The balanced form of the reaction would be:

2 Cr + 3 O2 → 2 CrO3

4. Li + O2: This reaction represents the combination of lithium (Li) and oxygen gas (O2). The balanced form of this reaction is:

4 Li + O2 → 2 Li2O

Please note that chemical reactions typically involve reactants and products, and it is essential to balance the equation to represent the conservation of mass.