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Hwk3_scanned - PHYS 153 Homework 3A Problem 1 A nebrla a...

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PHYS 153 Homework 3A Problem 1 A nebrla - a regioo of the galaxy where new sta,ls are formiog - contaiDs a vely tenuou6 gas vitb 100 atome/cm3. This go,s is heated to 7500 K by ultaviolet radiation form nearty staxs. What is the g06 pressureitr at!o? Problem 2 8,0 g of helium gas follo$s the proceso 1 + 2 - 3 Bbowtr i! the flgure. Find the I'a,lues of Vt' Vz' Pz, aad Ts bt?t q Problem 3 The ffguro 6hows two difieredt processes by wbich 80 mol of ges move froE state 1 to state 2. The dashed line is ao isotherm. (a) What iB the tempenture of the isotheraal process? (b) Whai E"xlmrr:r temperaturc is reached along the 8tlaight-lile process? ptk?^\
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t?' o4rlK N c'1 Problem 5 10 g of dry ice (eolid CO2) ie placed in a 10,000 cm8 contaircr, theo all the air is quickly pumped out s,nd the codairer sealed. The cotrtolrcr is warmed to 0 oC, a tempe€ture at which COz ie a gas. (a) what is the gas pEssure? Giv€ your ans!€r in atm The gos then utrdergoe8a,n isothemal compre€oioE until the pres6ute is 3.0 atE, iEldediatoly follow€d by atr igobaric
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