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A balloon contains 2.0 mol H2, 2.0mol N2 and 6.0 mol He at 273.15K. If the...

A balloon contains 2.0 mol H2, 2.0mol N2 and 6.0 mol He at 273.15K. If the balloon floats at a location where air pressure is 0.78atm, what is the partial pressure of N2 PN2 (unit: Torr)? Please write your answer with 2 decimals, as 200.23

Solutions

Expert Solution

no of moles of H2 nH2 = 2

no of moles of N2 nN2 = 2

no of moles of He nHe = 6

total no of moles   = nH2 + nN2 + nHe

                               = 2+2+6 = 10

mole fraction of N2 Xn2 = nN2/nH2 + nN2 + nH2

                                       = 2/2+2 +6   = 2/10 = 0.2

partial pressure of N2 PN2   = XN2 * total pressure

                                             = 0.2* 0.78   = 0.16atm

queen_honey_blossom answered 2 years ago
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