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OpenStudy (anonymous):
the anhydrous form of a compound is 38.95% of the mass of its heptahydrate form. calculate its molar mass.
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OpenStudy (gebooors):
Heptahydrate mean substance has 7 water molecule in Crystal. If x is molar mass, then M(7 H2O) form 61.05 % of the molar mass of the compound.
OpenStudy (anonymous):
but the answer is 80.48 grams/mol
OpenStudy (gebooors):
How much is molar mass of water?
OpenStudy (anonymous):
126.1036g/mol
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