Question

SerCP10 12.P.003.MI.FB -/6.25 points 1 Gas in a container is at a pressure of 1.7 atm and a volume of 3.0 m3. (a) what is the work done on the gas if it expands at constant pressure to twice its initial volume? (b) What is the work done on the gas if it is compressed at constant pressure to one-quarter of its initial volume? Need Help? Read It Master It SerCP10 12.P.009.WI 3. -/6.25 points One mole of an ideal gas initially at a temperature of T=9.0C undergoes an expansion at a constant pressure of 1.00 atm to eight times its original volume. (a) Calculate the new temperature T; of the gas к (b) Calculate the work done on the gas during the expansion. kl Need Help? Read It Watch it Show transcribed image text

Answer 1

Soluhon Griven Presu p. 7 alm P1.7XlXa am101 /e inihal Volum V 3om (a) final Volum 2 2x30 .0 m3 dene is wonk w= PCV-V) w= 1.7 .0) X/o5(6.0 - 3. o) W=5.151 X/0'| Cempressed then final volum when 30 0.75 m 4 wonk don W=PI-V, w1.7K1.01XI05075-3.0) 3.86 K/0T [37 inital temperat 79.0' Cotant pnersw nihal velume final velume Knaw tha at renstant pmesw (a) we V&T VECT C- Contant V V/2 Vi

7-)90 72.0'c 7 (67 dene fom the expansien ef the onstont pmess A Wonk at Plv-V)= P- nRT R= universalas Comton! her n mole ... RT R7-RT P (2 218 = M R = 8 314 mK : 72 + 273 : 72 "c = 345 K 79.0 2 7 39.0 282 K 8. 314 (345- 282) .. W= 3 X/O YINJO1 -i0T O.507 KJ = M 0.51 KJ OR