you cannot convert these units 7ug/g is a number ng/ml is a density.
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To convert from micrograms per gram (ug/g) to nanograms per milliliter (ng/mL), you need the density of the substance in grams per milliliter. Once you have the density, you can multiply 7 ug/g by the density to convert to ng/mL because 1 ug = 1000 ng and 1 g = 1 mL.
7 US fluid ounces = about 207 ml
103 mL = 3.48284434 US fluid ounces
To calculate the molarity, you need the molecular weight of selenium. Selenium's atomic weight is 78.971 g/mol. First, convert 0.7 µg to grams (0.0000007 g). Then, calculate the number of moles (0.0000007 g / 78.971 g/mol). Finally, determine the molarity by dividing the moles by the volume in liters (5 ml = 0.005 L).
There are approximately 207 milliliters in 7 ounces.
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