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Anonymous asked in Science & MathematicsChemistry · 2 months ago

How many moles of gas does the cylinder contain? ?

A cylinder contains 11.0 L of air at a total pressure of 42.8 psi and a temperature of 30 ∘C.

How many moles of gas does the cylinder contain?

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  • 2 months ago
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    42.8 psi = 2.91 atm

    assuming both are absolute

    n = PV/RT = (2.91)(11) / (0.08206)(273.16+30) = _____ mol

    Ideal gas law

    PV = nRT

    n = number of moles

    R = gas constant = 0.08206 (atm∙L)/(mol∙K)

                       8.314 L∙kPa/mol∙K

                       0.08314 L∙bar/mol∙K

                       62.36 L∙torr/mol∙K

                       62.36 L∙mmHg/mol∙K

    T = temperature in kelvins

    P = absolute pressure in atm, kPa, bar, torr

    V = volume in liters

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