Organic Chem Lab 4-t-butyl-cycolehxanol needed instead of isoborneol ( URGENT!)

The vapor pressure (VP) of ethanol is 400mmHg at 63.5 degrees celsius. Its molar heat of vaporization is 39.3kj/mol. What is vapor pressure of ethanol, in mmHg at 34.9 degrees celsius.

– use the equation lnVp= -H evap/RT + C