A mixture of helium and nitrogen with a nitrogen mass fraction of 35 percent is contained in a piston-cylinder device arranged to maintain a fixed pressure of 100 psia. Determine the work produced, in Btu/lbm, as this device is heated from 100°F to 500°F.
1 Dana Stamo SURVEY OF BIOCHEMISTRY SUMMER SESSION 2017 by DANA STAMO CHAPTER 18 | NITROGEN METABOLISM + - - Nitrification is the oxidation of NH 4 to NO t2en NO . 3 Denitrification is the conversion of nitrate to N . 2 Diazotrophs (prokaryotes including certain marine bacteria and cyanobacteria ) are the only organisms that produce the enzyme nitrogenase, capable of fixing N , an energetically expensive