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OpenStudy (anonymous):
What percentage by mass of the compound is water?
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OpenStudy (anonymous):
How many atoms of each element are contained in a single formula unit of Iron III formate, Fe(CH02)3 x H20? What percentrage by mass of the compound is water?
OpenStudy (anonymous):
8.62%
OpenStudy (anonymous):
Add the molecular weight of Fe(CHO2)3 (which is 190.9 g/mol) + water (18.0153 g/mol) and then divide the mass of water by the combined weight of the formula unit.. ((18.0153)/190.9+18.0153) then multiply by 100% and the answer is 8.62% :)
OpenStudy (anonymous):
thank you!!
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