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Since air is a mixture, it does not have a 'molar mass.' However, for calculation purposes, it is possible tospeak of its 'effective molar mass.' (An effective molar mass is a weighted average of the molar masses of a mixture's components.) If air at STP has a density of 1.285 g/L, its effective molar mass is __________ g/mol.

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Since air is a mixture, it does not have a 'molar mass.' However, for calculation purposes, it is possible tospeak of its 'effective molar mass.' (An effective molar mass is a weighted average of the molar masses of a mixture's components.) If air at STP has a density of 1.285 g/L, its effective molar mass is __________ g/mol.






 
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