Recent content by stads_29

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    Beer Lambert Law: Calculate Molar Extinction Coefficient at 405nm

    Homework Statement The p-nitrophenolate ion absorbs lights at 405nm. A solution that is 74um in the p-nitrophenolate ion was diluted 1 in 2 with water.Absorbance of resulting solution at 405nm was .650. Calculate molar extinction coefficient of the p-nitrophenolate ion at 405nm. Your meant to...
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    Help with Biochemistry Homework: Formic Acid, pH & Buffer Solutions

    ok got 2.3 as pH, is that right? Still not sure bout ratio. got 4.1 for the first part. Please help on the last part!? haven't clue what to do with buffer
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    Help with Biochemistry Homework: Formic Acid, pH & Buffer Solutions

    Homework Statement Hey, have this question which i just can't wrap my head around, any help would be appreciated. Formic Acid (HCOOH) - pKa = 3.8 is a weak acid that partially dissociates to form its conjugate base (HCOO-) and releases protons into aqueous solutions. Whats the pH of a solution...