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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 0.78 atm, 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 moles

no of moles of N2 nN2    = 2 moles

no of moles of He n He   = 6 moles

total no of moles = nH2 +nN2 +nHe   = 2+2+ 6 = 10 moles

mole fraction of N2 XN2 = nN2/nH2 +nN2 +nHe

                                          = 2/10 = 0.2

pertial pressure of N2 PN2 = XN2 * total pressure

                                             = 0.2 *0.78    = 0.16atm >>>>answer

queen_honey_blossom answered 2 years ago
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