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Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 100.mg of na present
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Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 100.mg of na present

User Arakweker
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For a pure sodium chloride compound, when sodium's content is 39%, then we must find the number of grams of sodium chloride, in which 39% of which is 100 mg. This is done by dividing 100 by 39%. The answer would be 256.41 mg of NaCl.
User Jannie
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