Which chemical equation is unbalanced? A). C+O,, CO,
B). Sr t+ O2 2SFO
C). 6H, + 30, 6H, O
D). H, +H, +O,-→ H,0 + H, O

The options in this question are unclear, the clear options are as follows:

A. C + O2 → CO2

B. Sr + O2 → 2SrO

C. 6H2 + 3O2 → 6H2O

D. H2 + H2 + O2 → H2O + H2O

The answer is B

Explanation:

A balanced chemical equation is that equation in which atoms of each elements in the reaction are of equal number on both sides of the equation (product and reactant). To balance a chemical equation, coefficients are used.

In this question, four chemical equations are given as follows:

- C + O2 → CO2

In this equation, atoms of carbon (1) and oxygen (2) are the same on both sides, hence, it is BALANCED.

- Sr + O2 → 2SrO

In this equation, Sr has 1 atom on the reactant side but 2 atoms on the product side. Hence, it is UNBALANCED. The balanced equation will be: 2Sr + O2 → 2SrO

- 6H2 + 3O2 → 6H2O

In this equation, atoms of hydrogen (12) and oxygen (6) are the same on both sides, hence, it is BALANCED.

- H2 + H2 + O2 → H2O + H2O

In this equation, atoms of hydrogen (4) and oxygen (2) are the same on both sides, hence, it is BALANCED.

the correct answer would be b) volume versus temperature, because they are also directly proportional.