Solution
Step III
Substitute time and molecular mass
    44
    time H₂S =     17
                        34

Step IV
    44
    time H₂S =     √   (17
                           34) =   1936 ÷44/Time H₂S
(Time H₂S)² = 1936 X 34/17
(Time H₂S)² = 3872
(Time H₂S) =√ 3872