RE: bichromate gum
The "reply-to" of Loris' message was set to his personal address instead of The List, so I post my reply again this is for Na2Cr2O7.2H2O.sodium dichromate's (NaDi) molar mass is 298.02g For the anhydrous form, the M.W. is 262.01. In this case the math changes accordingly. Alberto
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