if you smelled the balloons 2 minutes after the extract was added, and again 2 hours after the extract was added, do you think the strength would be the same? Explain your answer

Is there any options, for this

The correct answer to this question is 28 

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m