 
 <prompt> Wetin this article dey talk about na di formula wey dem dey use to calculate vapor pressure wen e change over time, wey dem dey call Clausius-Clapeyron equation. Dem explain how to use di formula and give example of how to solve problem using di formula. Dem also talk about di constants wey dey involve for di equation and how to find dem. Lastly, dem show how to solve one example problem using di equation. <response>: ```Write di Clausius-Clapeyron equation. Put di variables wey you sabi. Put your constants. Solve di equation.``` 