Molecular mass of K 3 Fe(CN) 6 = 329.27 g/mol. Step 4: Find the mass percent composition of each element. To find the mass percent composition of an element, divide the mass contribution of the element by the total molecular mass.This number must then be multiplied by 100% to be expressed as a percent.Mass percent composition of K = mass contribution of K/molecular mass of K 3 Fe(CN) 6 x 100%.olecular mass of K 3 Fe(CN) 6 = 329.27 g/mol. Step 4: Find the mass percent composition of each element. To find the mass percent composition of an element, divide the mass contribution of the element by the total molecular mass.
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PercocetÂ® (oxycodone/APAP) is a prescription pain medication. It contains acetaminophen (also known as TylenolÂ® and often abbreviated as APAP) and oxycodone, an opiate narcotic. Percocet is quite likely to cause constipation due to the narcotic component. Although you may be able to avoid this side effect if you take Percocet for just a few days (or if you only take it now and then), most people who take the drug will develop some degree of constipation.