Respuesta :
Answer: Option (D) is the correct answer.
Explanation:
A chemical equation in which the number of atoms on the reactant side are equal to the number of atoms on product side then it is known as a balanced equation.
For example, [tex]PH_{3}(g) + O_{2}(g) \rightarrow P_{4}O_{10}(s) + H_{2}O(g)[/tex]
This equation is not balanced yet as the number of atoms on reactant side are different from the atoms on product side.
Hence, we will balance this equation as follows.
[tex]4PH_{3}(g) + 8O_{2}(g) \rightarrow P_{4}O_{10}(s) + 6H_{2}O(g)[/tex]
Therefore, sum of the coefficients will be as follows.
Sum = 4 + 8 + 1 + 6
= 19
Thus, we can conclude that the sum of the coefficients when the given equation is balanced using the lowest whole-numbered coefficients is 19.
