A liter of air contains 7.2 x 10 to the power 5 mol of Argon (Ar). What is the mass of Ar in a liter of air?
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A liter of air contains 7.2 x 10 to the power 5 mol of Argon (Ar). What is the mass of Ar in a liter of air?
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Anne 
mass Ar = moles Ar x molar mass Ar
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DrBob222
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