2KI - 2K + 12
Calculate the number of moles of iodine produced in the decomposition of 7.0 moles of potassium iodide (KI). Express your
answer to the correct number of significant figures

The answer to your question is 3.5 moles of I₂    

Explanation:

Data

moles of I₂ = ?

moles of KI = 7

Balanced chemical reaction

                2KI  ⇒   2K  +  I₂

Process

To solve this problem use proportions and cross multiplication. Use the coefficients of the balanced chemical reaction for this proportion.

                2 moles of KI 1 mol of I₂

                7 moles of KI    x

                    x = (7 x 1) / 2

-Simplifying

                    x = 7/2

-Result

                   x = 3.5 moles of I₂        

1 a

2 d

3 a

4 c

explanation:

it's all four options.