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If you wanted to make a 3 liter solution of 500 mM formic acid buffer at pH 3.9 how many grams each of sodium formate (MW=68g/mol) and formic acid (MW=46g/mol) would you add? sodium formate and formic acid respectively 98.6g,2.3g 20.2g 9.4 g 13.8g, 13.6g 60.5g and 28.1g

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