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  • Pressure questions

    Pressure questions

    Calculate the partial pressure of oxygen and hydrogen in a mixture of 35.0 g of oxygen gas and 11.5 g of hydrogen gas in a 2.0 L container at 35F? Soln. number of moles of O2 = 35/32 = 1.1 mole number of moles of H2 = 11.5/2 = 5.75 mole total number of moles…

  • Gas effusion rate

    Gas effusion rate

    An unknown has a rate of effusion that is 4 times slower than the rate of H2 . What is the identity of this gas? Selecto one: Soln. = Effusion rate of H2 = 4 rate of unkown = = = takign the square of both sides: = M.wt = 32 Then it is O2…

  • Effusion question

    Effusion question

    The rate of Effusion of Ne gas through a porous barrier is observed to be 2.41 x 10-4 mol/hunder the same conditions, the rate of effusion of Xe gas would be ……………. mol/h Soln. M.wt of Ne = 10.18 g/mol M.wt of Xe = 131.29 g/mol = = 3.59 = 3.59 R(Xe) = = 6.71…

  • Gas effusion rate

    Gas effusion rate

    What will be the ratio of the rate effusion of carbon dioxide to the rate of effusion of nitrogen gas?Soln. By using Graham’s effusion rate law: M.wt CO2 = 44 g/mol M.wt N2 = 28 g/mol = = = 0.798 The question on chegg

  • Charle’s law

    Charle’s law

    When the volume of gas is changed from …….. L to 4.5 L, the temperature will change from 38.1°C to 15 °C. The link: https://www.chegg.com/homework-help/questions-and-answers/volume-gas-changed-l-450-l-temperature-change-381-degree-c-150-degree-c-q22533187 Soln. We need to make a relation between the volume and temp. of the gas. By using Charle’s law:  

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