What is the sum of the coefficients when the following equation is balanced using the lowest whole-numbered coefficients?
ph3(g) + o2(g) → p4o10(s) + h2o(g)

(a) 22
(b) 12
(c) 10
(d) 19

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,

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.

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.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons