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One cup of liquid (fluid) is 8 (fluid) ounces. Dry stuff will be measured in units of weight; grams, milligrams, pounds, ounces., etc. The weight of a cupful will be directly proportional to the density of the content of the materiel in the cup. This does not apply to "Mercury" which is a "liquid" metal.

2.5 to 3 oz. 1/3 cup is 2.7 oz.

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14y ago

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