PChemLabTXT_page_454

PChemLabTXT | page 454 | https://thedailydialectics.com/pdfs/education/chemistry/p-chem/PChemLabTXT/PChemLabTXT.pdf

ic Rev. Confirming Pages Exp. 39 Absorption and Emission Spectra of 443 The cell is prepared by adding several crystals of I,, after which it is pumped down to 10-3 Torr or less residual air pressure and sealed off. Heating of the cell is not necessary, but it is essential that the cell should not…