Two gases X and Y are found in the atmosphere in only trace amounts because they decompose quickly. When exposed to ultraviolet light the half-life of X is 1.25h, while that of Y is 150. min. Suppose an atmospheric scientist studying these decompositions fills a transparent 20.0 L flask with X and Y and exposes the flask to UV light. Initially, the partial pressure of X is 25.0% greater than the partial pressure of Y.

Will the partial pressure of X ever fall below the partial pressure of Y? (yes or no)

If yes, calculate the time it take the partial pressure of X to fall below the partial pressure of Y.