Steam expands in a cylinder with a sliding piston in a steam engine. The resisting pressure, Pext, is
73684 Pascals, the volume changes from 185.0 L to 50.8 L, and 4200 J of energy is lost to the surroundings as heat. Calculate the change in energy of the steam in Joules.
&nsbsp w = −Pext ΔV
2007-01-25 04:27:35 · 2 answers · asked by katttiscool 1 in Science & Mathematics ➔ Chemistry
Pretty much the exact question was asked yesterday. I think this link will get you there. I think the answers are fundamentally correct...
http://answers.yahoo.com/question/index;_ylt=AuDdppSy_tC2ZezVjOTrWWnsy6IX?qid=20070124130425AAgRQKh&show=7#profile-info-fc733d017588fdaf9779dfac84b3df66aa
2007-01-25 04:38:34 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋
(-73684)(50.8 - 185)(.001) - 4200 = 5688.3928
2007-01-25 15:27:55 · answer #2 · answered by Marty Kay 2 · 0⤊ 0⤋