Secure https:llsession.masteringche CHEM 215-01 Help Close Ch5-01 For Practice 5

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Secure https:llsession.masteringche CHEM 215-01 Help Close Ch5-01 For Practice 5.9 Enhanced with Feedback previous 18 of 19 next For Practice 5.9 Enhanced with Feedback You may want to reference (ua pages 216-222) Section 5.6 while completing this problem. Part A A sample of hydrogen gas is mixed with water vapor. The mixture has a total pressure of 759 torr, and the water vapor has a partial pressure of 23 torr. What amount (in moles) of hydrogen gas is contained in 1,55 Lof this mixture at 298 K? Express the amount in moles to three significant figures. mol Submit My Answers Give Up Provide Feedback Continue

Explanation / Answer

Ptotal= PPH2 + PPH2O---> PPH2= 759-23=7361torr

PV=nRT

760 torr ----1 atm

759 torr -----x= 0.999 atm

n= 0.999 x 1.55/0.082x298= 0.0633 mol H2

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