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Van Der Waals EQ moles! a)I need to determine the number of moles in some vapor.(n,vapor)(mol) P=.988403 atm V=148L T=371.65 a=9.523 b=0.06702 R=0.08206 I know the equation is P=(nRT/(V-nb))-(an^2/V^2) b) mass of vapor (m,vapor)(g) c) molar mass of compound (g/mol) I am having trouble calculating the moles though. Please help!

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