using a compound contains 3006 percent oxygen and
Using a compound contains 30.06 percent oxygen and 69.94 percent iron . Determine its molecular formula if the molar mass of the compound = 199.55 grams per mole?
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a female needs to take ibuprofen of 375mg twice daily the pills in the bottle are each 250 mg determine how many pills does the female require to
using a compound contains 3006 percent oxygen and 6994 percent iron determine its molecular formula if the molar mass of the compound 19955 grams
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