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Course Home MasteringChemistry Chapter 8-Problem Set- Mozilla Firefox https//session.masteringchemistry.com/myct/itemView?assignmentProblemID-88100671 Problem 29 lem 8.29 Part A Iculate the final pressure, in millimeters of rcury, for each of the following, if rn and V do not nge Agas with an initial pressure of 1200 Torr at 141 ocis cooled to 0°C Express your answer using two significant figures. p- mmHg Submit My Answers Give Up Part B A gas in an aerosol can at an initial pressure of 1.40 atm at 15 °C is heated to 40. Express your answer using three significant figures. mmHg Submit My Answers Sive Up

Explanation / Answer

Part-A

                 Initial                                    Final

           P1= 1200 torr                         P2=

          T1= 141 C                               T2 = 0C = 0 + 273 = 273K

              = 141 + 273=414K

According to Gay-Lussacs law

P1/T1= P2/T2

P2= P1xT2/T1 = 1200 x 273/414 = 791.3 torr

final pressure = P2 = 791.3 torr =791.3 mm of Hg = 7.9 x10^2 mm Hg                 [ 760 torr = 760 mm of Hg

                                                                       791.3 torr = ?

                                                                                 = 760 x791.3/760= 791.3 mm]

Part-B

P1= 1.40 arm= 1064 mm of Hg

T1 = 15C= 15 + 273 = 288K

T2= 40C = 40+273 = 313K

P2 = P1T2/T1 = 1064x313/288 = 1156.36 mm of Hg

final pressure = P2 = 1.15 x10^3 mm Hg

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