what's the vapor pressure of naphthalene in the 50 degree centigrade?
You will find data on the vapor pressure vs. T of napthalene (C10H8, "mothballs") at
http://www.diss.fu-berlin.de/diss/servlets/MCRFileNodeServlet/FUDISS_derivate_000000001299/08_Appendix.pdf;jsessionid=C12CBE82BFA3B472C498A4BCDF69F9E1?hosts=