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Is moist air heavier or lighter than dry air and why ? |
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Answer» SOLUTION :Dry air MAINLY contains `O_(2)` and `N_(2)` in the ratio of nearly `1:4`by VOLUME. Mol. Mass of dry air `=x_(o_(2))M_(o_(2))+x_(N_(2))M_(o_(2)).M_(o_(2))=32,M_(N_(2))=32,M_(N_(2))=28.As M_(H_(2)O)=18` which is less than `M_(o_(2))` or `M_(N_(2))`, molar mass of moist air will be less and hence will have less DENSITY and will be lighter. |
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