Question

NUAL EXAM: CHEMOS (Spring 19-20) 3 The value of x is 0.149 L, Y is 999 mL and Q is 4.83 kJ. OLARES In a production facility, methane gas is often used to drive the turbine engine. The production manager noticed that the gas volume decreased to x from Y when Q of heat was introduced externally into the gas chamber through the cylinder knob at a constant temperature. (a) Calculate the work done on the gas at a constant pressure 30400 mmHg. Work done! (b) Calculate the energy change for this process. Energy change ou Eastern Mediterranean Faculty of Arts & Sciences Department of Chemistry Next > 3 of 10 < Prev MacBook 10 0 5 c 4 3 2 K R E Н. w G

Answer 1

Initial Volunu Final Volume of gas 999 mb 0.149 L=149mL of gas Q = 4.83 RT a Calculate the wooldone Constand pressure Po Calculate how much done against Constant we me e at 30400 mmilye gar work a has a gas external pressure klork done - - Pexternal x DV BV = V finala Vinitial 149 - 999 ml = -850 ML 20.854 P = 80400 mmig Immiga 0-00131549 atm kookdone -Pexternal XOV P= 40.000 6 atm W.D=-400000 Osatm X0.8506L = 34 Latm → 34 L-fatm x 101-3255 Illatm = 3445.0 500 Jouls. th (when I work is positive Volence of gas decreases Couco and

6) Calculate the energy change for this process Gegy change, AE = qtw kl= work clone on the Ste tem Q = heat inhodwed into the gas chamber AFS 4.83KJ + 3445.0500 J x kJ TOOOT = 4c. 4.83 KJ + 3.44505 KJ = 8.27505 KI